CAT Exam - Simple Interest and Compound Interest Questions: In this article of Careers360, you will find simple ways to solve Simple Interest and Compound Interest problems that come in the CAT exam 2025. After learning about Profit and Loss methods, Data Interpretation tricks, and reading improvements on Day 9, we move to Day 10 of your CAT preparation journey. Simple Interest and Compound Interest questions often worry many CAT exam students because they seem confusing and take a considerable amount of time to solve.
This Story also Contains
Part 1: Quantitative Aptitude For CAT 2025
Part 2: Logical Reasoning And Data Interpretation
Part 3: VARC (Grammar tenses for CAT 2025 Exam)
Free PDFs for CAT 2025 preparation
CAT Exam - Simple interest compound interest
Our step-by-step 60-day study plan ensures you learn all topics thoroughly without rushing. When you solve the CAT previous year question papers, you will notice that numerical problems follow similar patterns every year. Using good CAT preparation books and following our simple CAT 2025 preparation strategies, you can turn these complex topics into easy-scoring topics. Using the best CAT preparation books along with our CAT preparation tips will make these tough topics much easier to understand and solve during your real CAT exam.
Part 1: Quantitative Aptitude For CAT 2025
Simple Interest And Compound Interest Concept
Simple Interest and Compound Interest are two of the most basic concepts in mathematics, here we will discuss, what is simple interest and compound interest, simple interest and compound interest for cat, Simple Interest and compound interest formulas, the difference between simple interest and Compound Interest formulas, simple interest and compound interest questions etc.
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Simple interest is defined as the interest calculated on the principal amount only; it does not take into account the interest on the interest.
For example, if you give your friend Rs. 1000, after 3 years he returns Rs. 1300. You have received an additional Rs. 300. This Rs. 300 is the simple interest for 3 years at the rate of 10% per annum.
The simple interest (SI) is calculated by multiplying the principal by the rate of interest and time (in years). The formula is: SI = (P × R × T) / 100 Where, P = Principal Sum R = rate of interest at which the sum is borrowed or lent T = time period (the duration for which money is borrowed or deposited) Alternatively, Calculate the interest for 1 year and multiply it by the time for which interest is to be calculated.
Compound Interest
Compound interest is the most common type of interest that we encounter in our daily lives. It depends on both the principal and the total interest accrued so far. When calculating Compound Interest, we add the previous interest amount to the principal and take that sum as the new principal. We can understand this by following the example: Let Rs 1000 be lent at the rate of 20% per annum compounded annually for 3 years. Principal = Rs. 1000 Year-Wise Interest 1st year: 20% of 1000 = 200 2nd year: 20% of (1000 + 200) = 200 + 40 = 240 3rd year: 20% of (1200 + 240) = 240 + 48 = 288 Total Interest for 3 years = 200 + 240 + 288 = Rs 728. Alternatively, we can use the formula. A = P×(1 + R/100)n Where, A = Amount P = Principal R = Rate of interest per annum compounded annually. n = Number of years If the rate is compounded half yearly, the rate is to be taken per six months, and the time will be a multiple of half years. Similarly, we can modify the rates and time if interest is compounded quarterly, yearly, monthly, etc., or we can use a general formula of compound interest: A = P(1+r/n)nt, where A = amount, P = principal, r = rate of interest in decimal, t = time in years, n = number of times interest is compounded in a year.
Types of problems
Simple Interest, Compound Interest, and CAT Questions can be divided into:
Questions that involve calculations of Simple Interest
Questions that include calculations of the rate of interest (Principal, time and Simple interest are given).
Questions that involve calculations of time (Principal, Rate of interest and Simple interest are given).
Questions that involve calculations of compound interest, such as if the rate is compounded annually, half-yearly, monthly, or quarterly.
Amount and Principal are given; Time or rate will be asked.
Questions based on the difference between SI and CI.
CAT 2025: VARC, DILR, and Quant MCQs & Weightages
Comprehensive CAT prep guide with focused practice on Verbal Ability, Data Interpretation & Logical Reasoning, and Quantitative Aptitude.
Simple Interest, Compound Interest, CAT Questions From CAT Previous Year Papers
Q.1. A person invested a total amount of Rs. 15 lakh. A part of it was invested in a fixed deposit earning 6% annual interest, and the remaining amount was invested in two other deposits in the ratio of 2:1, earning yearly interest at the rates of 4% and 3%, respectively. If the total yearly interest income is Rs. 76,000, then the amount (in Rs. lakh) invested in the fixed deposit was [CAT Question Paper 2019, TITA] (Simple interest CAT questions)
9 lakh
10 lakh
9.5 lakh
8 lakh
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Solution: Let's say the amounts invested in two other schemes are 200x and 100x at 4% and 3%, respectively. So, the Amount invested in a fixed deposit = 1500000 – 300x Two other schemes are 200x and 100x at 4% and 3%, respectively. Total annual interest = 6% of (1500000 – 300x) + 4% of 200x + 3% of 100x = 76000 ⇒ 90000 – 18x + 8x + 3x = 76000 ⇒ x = 2000 Therefore, the amount deposited in a fixed deposit = 1500000 – 600000 = 900000 = 9 lakh Hence, the correct answer is option (1).
Q2. Amala, Bina, and Gouri invest money in the ratio of 3: 4: 5 in fixed deposits having respective annual interest rates in the ratio of 6: 5: 4. What is their total interest income (In Rs) After a year, will Bina's interest income exceed Amala's by Rs 250? [CAT Question Paper 2019 slot-1]
6000
7250
6350
7000
Answer: (2) 7250
Solution: Ratio of interest of Amala, Bina, and Gouri = (3 × 6) : (4 × 5) : (5 × 4) = 9 : 10 : 10 The interest income of Amala, Bina, and Gouri can be taken as 9x, 10x, and 10x, respectively. Total income = 29x Difference between interest income of Bina and Amala = 250 = (10x – 9x) = x Therefore, Total income from interest = 29 × 250 = 7250 Hence, the correct answer is option (2).
Q.3. A sum was doubled with a 12.5% rate of simple interest per annum. The time taken for that sum to be doubled is:
8 (½) years
8 years
12 years
12 (½) years
Answer: (2) 8 years
Solution: Let the principal be P. Sum = 2P Let the time be T. Therefore, Simple interest = Amount – Principal = 2P – P = P We know, Simple interest = (Principal × Rate × Time) / 100 ⇒ T = (P × 100) / (P × 12.5) ⇒ T = 1000 / 125 So, T = 8 years Hence, the correct answer is option (2).
Q.4. A sum of money becomes 1.331 times in 3 years as compound interest. The rate of interest is:
8%
7.5%
10%
50%
Answer: (3) 10%
Solution: Assuming the principal is Rs. 1000, the amount will be Rs. 1331. When compounded annually, A = P×(1 + R/100)T, where A is the total amount, P is the principal amount, R is the rate of interest per annum, and T is the time in years. So, 1331 = 1000(1 + R/100)3 ⇒ 1331/1000 = (1 + R/100)3 ⇒(11/10)3=(1 + R/100)3 ⇒ 11/10 = 1 + R/100 ⇒ R/100 = 1/10 ⇒ R = 10% Hence, the correct answer is option (3).
Q.5. B borrows Rs. 5000 from A at 6% p.a. simple interest and lends it to C at compound interest of 10% p.a. If B collects the money back from C after 2 years and repays A, the profit made by B in the transaction is ______.
Rs. 1050
Rs. 450
Rs. 600
Rs. 500
Answer: (2) 450
Solution: At Simple Interest, B borrows from A. Principal = Rs. 5000 Rate = 6% Time = 2 years At Compound Interest, B lends to C. Principal, P = Rs. 5000 Time, n = 2 years Rate, R = 10% We know, Simple interest = (P× R × T)/100 Total amount = P×(1 + R/100)n Simple interest = (5000 × 2 × 6)/100 = Rs. 600 Total amount to be paid back to A = 5000 + 600 = Rs. 5600 B lends to C at Compound interest. Total amount = 5000(1 + 10/100)2 = 5000 × 1.21= Rs. 6050 So, the profit made by B = Rs. 6050 – Rs. 5600 = Rs. 450 Hence, the correct answer is option (2).
What You Must Know Before Solving SI & CI Questions
Fractions and percentages are at their fingertips.
Vedic Maths (Simplification and Approximation)
Ratios
Simple Interest And Compound Interest Tricks For CAT 2025
Use the concept of fractions and percentages in SI and CI
Use the idea of successive change in the problems of Compound Interest.
Difference between SI and CI for two cycles = P(r/100)2.
Difference between SI and CI for three cycles = P(r/100)2 x (3 + r/100).
If a sum of money becomes x times in n years at the simple rate of interest, then the rate is calculated as R = (x - 1) x 100/n
Practice simple interest questions and Compound Interest questions ( discussed in the introduction) separately.
References To Study (Theory) Simple Interest And Compound Interest Concept
Quantitative Aptitude for CAT by NN.K.Sinha
2iim Online Learning Classroom
References To Study (Practice) Simple Interest, Compound Interest, CAT Questions
Arun Sharma: A Quantitative Approach for CAT (6th Edition)
Blood Relation is one of the most essential parts of LR. A blood relationship is defined as any relationship formed by birth or marriage. Here, we will discuss blood relations in Logical Reasoning, including types of blood relations, what blood relations are in logical reasoning, and blood relation questions in logical reasoning. Let us start with the kinds of blood relations:
Birth Relations (paternal or maternal): Mother, Father, Son, Daughter, Brother, Siste, etc.
Paternal: Relations from the father's side.
Maternal: Relations from the mother's side.
Relations from a marriage: Mother-in-law, father-in-law, sister-in-law, etc.
Types Of Blood Relation CAT 2025 Questions:
Direct Questions/Single Statement Based: The Relationship between two persons is given indirectly, and you have to find the correct relationship.
Puzzled Relation: A set of information is given about the relations, professions, place, etc. Using that information, answers have to be determined.
Coded Blood Relation: Relationships are presented in the form of codes. For example, A @B means A is the father of B. A#B means B is the father of A, etc.
Relationships of mixed blood: These involve relations between two or more families.
Tips for CAT 2025 Blood Relations Questions
Family Tree: Forefathers and mothers serve as the roots of the tree, followed by their children, who form the stems of the tree, and then their grandchildren. It is a visual representation of a family, and the most helpful trick for solving questions of Blood Relation.
Backtracking: For questions of the single-statement type, draw a family tree using the latest information first.
Elimination of the Wrong option: Most effective in the questions of coded Blood Relation. By using the generation gap and gender identification, wrong choices can be eliminated. The gender of a person cannot be determined by their name. A specific notation should be used to distinguish between females and males when drawing a family tree. Members of the same generation should not determine a person's gender. That Can Help You Learn: (Based on the CAT Exam)
Direction (Q1- Q2) In a family, there are seven members- A, B, C, D, E, F, and G. A and B are a married couple, and A is a male member. D is the only son of C's brother. D is the brother of E and F. G is the head of the family, whose wife died long ago. G has two sons, one of whom never got married. There are only three generations in the family.
Q.1. How is F related to A?
Mother
Sister-in-law
Sister
Daughter
None of these
Ans: (4) Daughter
Q.2. Who is an unmarried member of the second generation?
C
G
H
Cannot be determined
None of these
Ans: (1) C
Solution: G (male, since he had a wife who died long ago) is the head of the family and has two sons. A, who is the brother of C (since D is the son of A and D is the brother of E and F), the only possibility of G's sons is A and C, is married to B and has a son D. So, A and C must be in the second generation. Therefore, D must be the son of A. Also, E and F are sisters of D, and A must be the father of E and F. C is unmarried since he is the brother of A (G has two sons, and A is the brother of C)
Q.3.
Read the following instructions: P$Q means Q is the brother of P; P * Q means Q is the mother of P; P x Q means P is the son of Q. If the code of a family is A *B$CC x D, who is the father among them?
D
B
C
A
Answer: (1) D
Solution: A * B means B is the mother of A, and hence B is the mother in the family. B$C means C is the brother of B. C x D indicates C is the son of D, and hence D is the father in the family. D is the father of B and C, and B is the mother of A. Hence, option 1 is correct.
D
B
C
A
Answer: (1) D
Solution: A # B means B is the mother of A, and hence B is the mother in the family.B$CC means C is the brother of B. C x D indicates C is the son of D, and hence D is the father in the family.y D is the father of B and C, and B is the mother of A. Hence, option 1 is correct.
Prerequisite Before Solving Blood Relation Questions
To prepare for Blood relations, students must know of:
Basic family relations
Generation gaps
Relations of in-laws
Basic knowledge of coding
References to Study (Theory):
LRDI for CAT and GMAT by Nishit K. Sinha, www.catking.in (Web as well as YouTube Channel)
References to Study (Practice):
Verbal and Non-Verbal Reasoning by R. S. Aggarwal.
CAT's previous years' papers
Part 3: VARC (Grammar tenses for CAT 2025 Exam)
Topic: Tenses Part-1 ( Present Tenses)
Tenses are of three types: present tense, past tense, and future tense. Tenses are the most common area of error in the English language. Therefore, we must prepare our tenses well. Here, we will discuss the tense in English grammar, including exercises, examples, and worksheets for the present tense. Three easy steps to solve the problems that involve errors in the present tense:
Learn the most common errors
Spot the errors
Correct the errors
Present Tense:
The present tense describes an action that is happening in the present time. The present tense can further be divided into four categories to indicate the action as follows:
Q: Are the previous year's CAT papers enough for practice?
A:
Previous year papers are essential but not sufficient alone. Combine them with good preparation books, such as Arun Sharma for Quant, and practice from multiple sources. Previous papers help understand patterns, but additional practice builds speed and accuracy.
Q: How to solve blood relation problems in CAT?
A:
There are many approaches we can take to solve blood relation problems, these are:
Family Tree: Forefathers and mothers serve as the roots of the tree, followed by their children forming the stems of the tree and then grandchildren. It is a visual representation of a family and the most helpful trick to solve the questions of blood relation
Back-tracking: In the questions of the type of single statement, draw a family tree using the last information first.
Elimination of the Wrong option: Most effective in the questions of coded blood relation. By using the generation gap and gender identification, wrong options can be eliminated. The gender of a person cannot be determined by their name. A specific notation should be used for females and males while drawing the family tree. Members of the same generation should be represented at the same level.
Q: What are the 4 types of present tense?
A:
The present tense can be divided into four categories: simple present or present indefinite, present continuous, present perfect, and present perfect continuous.
Q: What are the most scoring topics in CAT 2025 Quantitative Aptitude?
A:
Arithmetic (SI/CI, Profit and Loss, Percentages), Number Systems, and Geometry are typically high-scoring subjects. These topics have straightforward concepts and appear frequently. Master the basics and practice various question types from these areas.
Q: What is the formula for simple interest and compound interest for CAT?
A:
The formula for simple interest, SI = (P × R × T) / 100 Where, P = Principal Sum, R = rate of interest at which sum is borrowed or lent, and T = time period (the duration for which money is borrowed or deposited). The formula for compound interest, A = P×(1 + R/100)^n Where, A = Amount, P = Principal, R = Rate of interest per annum compounded annually, and n = Number of years.
Q: Is it better to earn simple or compound interest?
A:
If you are lending money to someone then compound interest is better as it can give more earnings, but if you are borrowing money from someone then simple interest is better as you have to pay less in interest..
Q: What is the Blood Relation in logical reasoning?
A:
Blood relation in logical reasoning involves finding relationships between individuals based on given information. These questions test your ability to analyse and deduce relationships like parent, sibling, grandparent, cousin etc.
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The CAT 2025 exam is a national-level MBA entrance test for IIMs and top B-schools in India. It will be held on 30th November 2025 in computer-based mode across ~170 cities.
The registration is open from 1st August to 13th September 2025 on
iimcat.ac.in
.
Admit cards will be available from 5th November 2025 onward.
Graduates with at least 50 marks (45 for SC/ST/PwD) are eligible to apply.
The exam tests English, Reasoning, and Quantitative Aptitude in three timed sections.
With 305 marks in ICAR PG and being from ST category, your chances of getting an AIEEA (CAT) seat is good, especially in plant sciences and less competitive subjects
M/s Deloitte Touche Tohmatsu Limited, one of the top four audit and accounting firms in the world with headquarters at London, UK, and with an operational presence in 153 countries, hires Management Trainees (MT) from all the premier management institutes of India thrice every year, in the months of January, May and September.
Each new group of Management Trainees (MT) have to go through a four month rigorous training schedule, after which they have to pass through a test consisting of a written assessment and a case-analysis. The top hundred ranked Management Trainees (MT) based on the performance in the test are confirmed as Management Executives (ME). The rest are given the opportunity of undergoing the training for four months one more time along with the next batch of Management Trainees (MT) and then passing through the subsequent test consisting of the written assessment and case-analysis. The Management Trainee (MT) who fails to get confirmed as a Management Executive (ME) the second time is fired.
The scatter-graph below depicts the number of Management Trainees (MT) at Deloitte taking the tests from January 2020 till May 2022, and the vis-à-vis hired Management Trainees (MT) at Deloitte who were fired :
It is also known that for the month of September 2019 at Deloitte, 96 hired Management Trainees (MT) failed to be confirmed as a Management Executive (ME) the first time, and that 36 hired Management Trainees (MT) were fired.
Question :
In which test did the minimum number of Management Trainees (MT) get confirmed as a Management Executive (ME) in the second attempt ?
Two friends Moloy and Niloy passed out from the Purulia Institute of Science and Technology with B.Tech degrees in Mechanical Engineering, but even after a year placement was hard to find. So they decided to take the challenge head-on, came down to Kolkata, rented a garage space on Park Street, and having an affinity towards making people enjoy good food, started their firm named 'B.Tech Bread-Omlette Wala'.
They started with three items on the menu. One was the French Toast which could be prepared in 3 minutes. The second was the Egg Tortillas which took 15 minutes to prepare. Any one of Moloy and Niloy could prepare any one of them at a time. The third was the Egg Bhurji with French Fries. This however was prepared on an automated fryer which could prepare 3 servings at a time and took 5 minutes irrespective of the number of servings equal to or below 3. The fryer did not need anyone to attend to it, and the time to put in the raw ingredients could be neglected. So one could tend to the preparation of other items while the Egg Bhurji with French Fries were being prepared.
They wanted to serve the orders as early as possible after the order was given. The individual items in any order were served as and when all the items were ready, and the order was then considered closed. None of the items on the menu were prepared in advance in anticipation of future orders.
On the first day, 3 groups of customers came in and ordered at 6.00 pm, 6.10 pm, and 6.13 pm. The first order was for a plate of Egg Tortillas, two plates of French Toast, and three plates of Egg Bhurji with French Fries. The second order was for a plate of French Toast and two plates of Egg Bhurji with French Fries. The third order was for a plate of Egg Tortilla and a plate of Egg Bhurji with French Fries.
On the backdrop of the above information answer the questions given :
Question:
Assuming that the next customer's order could only be attended to when the previous customer's order was closed, at what time would the first customer's order be considered closed ?
Six sticks of equal lengths were kept in the vertical position in an empty flower-vase, to be arranged at the six corners of a regular hexagon. The two ends of each of the sticks were of different colours.
The top ends of the sticks were one of each of the following colours – Red, Cyan, Pink, Brown, Black and Green. The bottom ends were one of each of the following colours – Blue, Yellow, White, Orange, Purple and Grey. Both the sets of colours mentioned were in no particular order.
It was also known that :
a) The stick with the red colour was opposite to the stick with the blue colour
b) There were exactly two sticks whose both ends had colours whose names started with the same letter
c) The stick with the grey colour was adjacent to the stick with the white colour
d) The stick with the cyan colour was adjacent to both the sticks with the brown colour and the one with the blue colour
e) The stick with the purple colour was adjacent to both the sticks with the grey colour and the one with the green colour
f) The stick with the white colour was opposite to the stick with the green colour
Question :
What was the colour of the bottom end of the stick having brown colour at the top end ?
Two friends Moloy and Niloy passed out from the Purulia Institute of Science and Technology with B.Tech degrees in Mechanical Engineering, but even after a year placement was hard to find. So they decided to take the challenge head-on, came down to Kolkata, rented a garage space on Park Street, and having an affinity towards making people enjoy good food, started their firm named 'B.Tech Bread-Omlette Wala'.
They started with three items on the menu. One was the French Toast which could be prepared in 3 minutes. The second was the Egg Tortillas which took 15 minutes to prepare. Any one of Moloy and Niloy could prepare any one of them at a time. The third was the Egg Bhurji with French Fries. This however was prepared on an automated fryer which could prepare 3 servings at a time and took 5 minutes irrespective of the number of servings equal to or below 3. The fryer did not need anyone to attend to it, and the time to put in the raw ingredients could be neglected. So one could tend to the preparation of other items while the Egg Bhurji with French Fries were being prepared.
They wanted to serve the orders as early as possible after the order was given. The individual items in any order were served as and when all the items were ready, and the order was then considered closed. None of the items on the menu were prepared in advance in anticipation of future orders.
On the first day, 3 groups of customers came in and ordered at 6.00 pm, 6.10 pm, and 6.13 pm. The first order was for a plate of Egg Tortillas, two plates of French Toast, and three plates of Egg Bhurji with French Fries. The second order was for a plate of French Toast and two plates of Egg Bhurji with French Fries. The third order was for a plate of Egg Tortilla and a plate of Egg Bhurji with French Fries.
On the backdrop of the above information answer the questions given :
Question:
Assuming that the next customer's order could only be attended to when the previous customer's order was closed, at what time would the third customer's order be considered closed ?
Two friends Moloy and Niloy passed out from the Purulia Institute of Science and Technology with B.Tech degrees in Mechanical Engineering, but even after a year placement was hard to find. So they decided to take the challenge head-on, came down to Kolkata, rented a garage space on Park Street, and having an affinity towards making people enjoy good food, started their firm named 'B.Tech Bread-Omlette Wala'.
They started with three items on the menu. One was the French Toast which could be prepared in 3 minutes. The second was the Egg Tortillas which took 15 minutes to prepare. Any one of Moloy and Niloy could prepare any one of them at a time. The third was the Egg Bhurji with French Fries. This however was prepared on an automated fryer which could prepare 3 servings at a time and took 5 minutes irrespective of the number of servings equal to or below 3. The fryer did not need anyone to attend to it, and the time to put in the raw ingredients could be neglected. So one could tend to the preparation of other items while the Egg Bhurji with French Fries were being prepared.
They wanted to serve the orders as early as possible after the order was given. The individual items in any order were served as and when all the items were ready, and the order was then considered closed. None of the items on the menu were prepared in advance in anticipation of future orders.
On the first day, 3 groups of customers came in and ordered at 6.00 pm, 6.10 pm, and 6.13 pm. The first order was for a plate of Egg Tortillas, two plates of French Toast, and three plates of Egg Bhurji with French Fries. The second order was for a plate of French Toast and two plates of Egg Bhurji with French Fries. The third order was for a plate of Egg Tortilla and a plate of Egg Bhurji with French Fries.
On the backdrop of the above information answer the questions given :
Question:
Suppose Moloy and Niloy had decided to process multiple orders at the same time, however strictly prioritising a first come first serve basis, when would the second customer's order be considered closed ?
Two friends Moloy and Niloy passed out from the Purulia Institute of Science and Technology with B.Tech degrees in Mechanical Engineering, but even after a year placement was hard to find. So they decided to take the challenge head-on, came down to Kolkata, rented a garage space on Park Street, and having an affinity towards making people enjoy good food, started their firm named 'B.Tech Bread-Omlette Wala'.
They started with three items on the menu. One was the French Toast which could be prepared in 3 minutes. The second was the Egg Tortillas which took 15 minutes to prepare. Any one of Moloy and Niloy could prepare any one of them at a time. The third was the Egg Bhurji with French Fries. This however was prepared on an automated fryer which could prepare 3 servings at a time and took 5 minutes irrespective of the number of servings equal to or below 3. The fryer did not need anyone to attend to it, and the time to put in the raw ingredients could be neglected. So one could tend to the preparation of other items while the Egg Bhurji with French Fries were being prepared.
They wanted to serve the orders as early as possible after the order was given. The individual items in any order were served as and when all the items were ready, and the order was then considered closed. None of the items on the menu were prepared in advance in anticipation of future orders.
On the first day, 3 groups of customers came in and ordered at 6.00 pm, 6.10 pm, and 6.13 pm. The first order was for a plate of Egg Tortillas, two plates of French Toast, and three plates of Egg Bhurji with French Fries. The second order was for a plate of French Toast and two plates of Egg Bhurji with French Fries. The third order was for a plate of Egg Tortilla and a plate of Egg Bhurji with French Fries.
On the backdrop of the above information answer the questions given :
Question:
Suppose Moloy and Niloy had decided to process multiple orders at the same time, however strictly prioritising a first come first serve basis, when would the third customer's order be considered closed ?
Two friends Moloy and Niloy passed out from the Purulia Institute of Science and Technology with B.Tech degrees in Mechanical Engineering, but even after a year placement was hard to find. So they decided to take the challenge head-on, came down to Kolkata, rented a garage space on Park Street, and having an affinity towards making people enjoy good food, started their firm named 'B.Tech Bread-Omlette Wala'.
They started with three items on the menu. One was the French Toast which could be prepared in 3 minutes. The second was the Egg Tortillas which took 15 minutes to prepare. Any one of Moloy and Niloy could prepare any one of them at a time. The third was the Egg Bhurji with French Fries. This however was prepared on an automated fryer which could prepare 3 servings at a time and took 5 minutes irrespective of the number of servings equal to or below 3. The fryer did not need anyone to attend to it, and the time to put in the raw ingredients could be neglected. So one could tend to the preparation of other items while the Egg Bhurji with French Fries were being prepared.
They wanted to serve the orders as early as possible after the order was given. The individual items in any order were served as and when all the items were ready, and the order was then considered closed. None of the items on the menu were prepared in advance in anticipation of future orders.
On the first day, 3 groups of customers came in and ordered at 6.00 pm, 6.10 pm, and 6.13 pm. The first order was for a plate of Egg Tortillas, two plates of French Toast, and three plates of Egg Bhurji with French Fries. The second order was for a plate of French Toast and two plates of Egg Bhurji with French Fries. The third order was for a plate of Egg Tortilla and a plate of Egg Bhurji with French Fries.
On the backdrop of the above information answer the questions given :
Question:
A fourth customer comes in and orders two plates of French Toast at 6.24 pm. Suppose Moloy and Niloy had decided to process multiple orders at the same time, however strictly prioritising a first come first serve basis. For exactly how many minutes would one of the friends be idle from 6.00 pm till serving the last customer, assuming that the four customers were the only ones to have come in within the period being discussed ?
Two friends Moloy and Niloy passed out from the Purulia Institute of Science and Technology with B.Tech degrees in Mechanical Engineering, but even after a year placement was hard to find. So they decided to take the challenge head-on, came down to Kolkata, rented a garage space on Park Street, and having an affinity towards making people enjoy good food, started their firm named 'B.Tech Bread-Omlette Wala'.
They started with three items on the menu. One was the French Toast which could be prepared in 3 minutes. The second was the Egg Tortillas which took 15 minutes to prepare. Any one of Moloy and Niloy could prepare any one of them at a time. The third was the Egg Bhurji with French Fries. This however was prepared on an automated fryer which could prepare 3 servings at a time and took 5 minutes irrespective of the number of servings equal to or below 3. The fryer did not need anyone to attend to it, and the time to put in the raw ingredients could be neglected. So one could tend to the preparation of other items while the Egg Bhurji with French Fries were being prepared.
They wanted to serve the orders as early as possible after the order was given. The individual items in any order were served as and when all the items were ready, and the order was then considered closed. None of the items on the menu were prepared in advance in anticipation of future orders.
On the first day, 3 groups of customers came in and ordered at 6.00 pm, 6.10 pm, and 6.13 pm. The first order was for a plate of Egg Tortillas, two plates of French Toast, and three plates of Egg Bhurji with French Fries. The second order was for a plate of French Toast and two plates of Egg Bhurji with French Fries. The third order was for a plate of Egg Tortilla and a plate of Egg Bhurji with French Fries.
On the backdrop of the above information answer the questions given :
Question:
Had Niloy been absent on that day, and assuming that the next customer's order could only be attended to when the previous customer's order was closed, at what time would the fourth customer's order (refer to the previous question) be considered closed ?
The bar-graph given below shows the foreign exchange reserves of Nepal (in million Rupees) from 2014 to 2021. Answer the following questions based on the graph :
Question:
What was the percentage increase (rounded to the nearest integer, if deemed necessary) in the foreign exchange reserves in 2020 over 2016 ?
The Jadavpur University’s Prince Anwar Shah Road hostel consists of two large separate buildings, one for the ladies and the other for the gents, while having a common kitchen and dining hall. It is the hostel of the CS and the EEC department of engineering students of the university.
In recognition of the growing dissatisfaction and hence complaints among the inmates of the hostel regarding the menu served for dinner, the Dean of the engineering department, Dr Aparesh Sanyal, personally decided to investigate the matter. He set about collecting information about the preference of dinner among the inmates, separately from the gents and the ladies wing of the hostel.
Dr Sanyal was able to gather the following partial information :
Hostel inmates
Menu preference for dinner
Total
Egg Meal
Fish Meal
Chicken Meal
Gents
20
Ladies
64
Total
60
The Warden of the hostel was consulted, who after investigation declared that the following facts were clear :
1. Forty percent of the hostel inmates were ladies
2. One-third of the gentlemen inmates preferred an egg meal for dinner
3. Half the hostel inmates preferred either fish meal or chicken meal
Question:
What proportion of the lady hostel inmates preferred a fish meal for dinner ?
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