This article covers quantitative aptitude for CAT, DIRL and VARC sentence correction sessions. Students are recommended to go forward with this and practise a little more. Many aspirants also refer to books such as Quantitative books for CAT to learn and practise more regarding the subject. These Average mixture and allegation CAT questions are good for the aspirants to understand the usage of Averages. Aspirants can also refer to average questions for CAT pdf.
This Story also Contains
CAT 2024 QA Preparation Tips (Quantitative Aptitude for CAT)
CAT 2024 Preparation Tips: CAT DILR questions (CAT Logical Reasoning questions and Data Interpretation)
CAT 2024 QA Preparation Tips (Quantitative Aptitude for CAT)
CAT Exam Important Topic: Average (Algebra)
What is average in math or algebra?
The Average or mean is calculated by the sum of observations divided by the number of observations.
Simple Average/ Simple Mean (X) = (x1 + x2 + x3 +… + xn)/n; x1, x2, x3, ………, xn are n number of observations.
Weighted Average/ Weighted Mean:
i.e, x1, x2, x3, ………, xn are n observations. w1, w2, ……., wn are their respective weights.
Some tricks and approaches for CAT exam Preparation:
Average questions for CAT exam:
Difference between the persons added and who left = change in average × number of persons. When a person joins the group of n persons; if the average increases then the Age of the new person = Old average + (n + 1) × difference between averages If the average decreases then: Age of the new person = Old average - (n + 1) × difference between averages
The average of an AP of odd terms is always its middle term.
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The average of an AP of even terms is the average of its two middle terms.
When a person replaces another person then the average age of the group will be increased or decreased.
CAT Questions from Averages (based on PYQs)
Q1. Ramesh and Gautam are among 22 students who wrote an examination. Ramesh scores 82.5. The average score of the 21 students other than Gautam is 62. The average score of all 22 students is one more than the average score of the 21 students other than Ramesh. The score of Gautam is:
[CAT exam 2019, TITA]
Solution:
Let the score of Gautam be x.
According to the given condition,
Total marks of 22 students = 21 × 62 + x
∴ Average score of 22 students = (21 × 62 + x)/22
According to the second condition,
The average score of all 22 students is one more than the average score of the 21 students other than Ramesh,
So, (21 × 62 + x)/22 = (21 × 62 + x – 82.5)/21 + 1
⇒ (21 × 62 + x)/22 -1 = (21 × 62 + x – 82.5)/21
⇒ (21 × 62 + x - 22)/22 = (21 × 62 + x – 82.5)/21
⇒ (1280 + x) / 22 = (1219.5 + x) / 21
⇒ x = 51
Hence, the correct answer is 51.
Q2. Last year, the average age of the class of 25 students was 13 years. If the age of the class teacher was included, the new average of the class became 14 years. Exactly a year later (i.e. this year), the class teacher leaves the school and if the age of the new class teacher is included, then the new average of the class this year becomes 14.5 years. Find the age of the new class teacher. [CAT exam PYQ]
27
41
43
67
Solution:
Present average of 25 students = 14 years
Total age of 25 students = 25 × 14 = 350
Let the age of new teacher be x.
Average (including new class teacher) = (350 + x)/ 26
⇒ 14.5 = (350 + x)/ 26
⇒ 350 + x = 377
⇒ x = 27
Hence, the correct answer is 27 years.
Q3. In 2001, the average age of a family of 7 members was 36 years. In 2010 a family member expired and a child was born to the family. In 2018 another family member expired merely a week later after the marriage of the younger son of the family to his bride of age 27 years. It was found that the average age of the family in 2021 was 43 years. Out of the options provided, which could have been the individual age of the two family members when they expired in 2010 and 2018, respectively?
68 and 50
74 and 52
82 and 40
84 and 43
Solution:
If the average in 2001 is 36, then in 2021 the average must be 36 + 20 = 56 years
But actually, it is 43 years, that is a deficit of (56 – 43) = 13 years
Throughout the 20 years, at the end of every year, the total members of the family were 7.
∴ Deficit in years = 7 × 13 = 91 years
But the bride was added to the family at 27 years of age.
So the total deficit created by the expiry of the 2 members of the family was = 91 + 27 = 118 years
Out of the options, only the first one’s total comes to 118 years.
Hence, the correct answer is 68 and 50.
Q4. Out of 28 non-zero integers, exactly 12 exceed 10 and exactly 12 are less than 10. The average of these 28 integers is 10. What is the highest possible value of the average of the remaining 4 integers?
14
13
14.5
10
Solution:
Each of the remaining numbers is equal to 10. (the only possibility)
So, the average of the remaining 4 will be 10. Hence, the correct answer is 10.
Prerequisite:
Arithmetic Progression, Geometric Progression
Arithmetic Mean and Geometric Mean
Knowledge of Linear Equations
CAT Exam 2024 Preparation: Tips to solve CAT questions on Averages
To begin your CAT preparation, go through these steps in order.
At the initial stage of preparation for CAT 2024, try to solve at least 4 to 5 questions on averages to check your understanding of the concept.
Get familiar with fundamental questions like “What is Average in math formula”, “How to find the average in math”, “What is the meaning of average in math”, “Another name for average in math” and “What is weighted average”.
Try some basic questions on averages. (Probably level of difficulty 1)
Once you have figured out the basics, you can move on to more difficult problems by learning some shortcuts and special cases.
Start to solve difficult problems from the books which are suggested in this article.
CAT syllabus 2024: References for Study; CAT Aptitude books (Theory)
How to Prepare Quantitative Aptitude by Arun Sharma (7th edition)
Handa Ka Funda CAT Exam Prep
Mission CAT (YouTube)
CAT syllabus 2024: References to Study (Practice)
R S Agrawal for quantitative aptitude
https://iim-cat-questions-answers.2iim.com
Previous Year's Question Papers
CAT 2024 Preparation Tips: CAT DILR questions (CAT Logical Reasoning questions and Data Interpretation)
CAT 2024 Syllabus Topic: Problem Solving/Puzzle (Distribution)
The following concepts are used in distribution-based puzzles:
Distribution of objects among persons/places
Arrangement of persons based on some parameters like height, rank, weight, etc.
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CAT preparation: Importance of puzzles based on distribution:
Puzzles on distribution are used as an effective tool for learning.
It carries a good weightage in the CAT Exam as seen in CAT previous year papers.
Help a person in solving real-life situations.
Students need to practice the selection and distribution CAT questions to get a better idea about this topic.
CAT Previous Year Questions: Puzzles based on Distribution
Comprehension:
Adriana, Bandita, Chitra, and Daisy are four female students, and Amit, Barun, Chetan, and Deb are four male students. Each of them studies in one of three institutes - X, Y, and Z. Each student majors in one subject among Marketing, Operations, and Finance, and minors in a different one among these three subjects. The following facts are known about the eight students:
Three students are from X, three are from Y, and the remaining two students, both female, are from Z.
Both the male students from Y minor in Finance, while the female students from Y majors in Operations.
Only one male student majors in Operations, while three female students minor in Marketing.
One female and two male students major in Finance.
Adriana and Deb are from the same institute. Daisy and Amit are from the same institute.
Barun is from Y and majors in Operations. Chetan is from X and majors in Finance.
Daisy minors in Operations. [CAT exam 2018]
Q1. Who are the students from Institute Z?
Adriana and Bandita
Adriana and Daisy
Chitra and Daisy
Bandita and Chitra
Q2. Which subject does Deb minor in?
Marketing
Operations
Cannot be determined uniquely from the given information
Finance
Q3. Which subject does Amit major in?
Cannot be determined uniquely from the given information
Marketing
Finance
Operations
Q4. If Chitra majors in Finance, which subject does Bandita major in?
Cannot be determined uniquely from the given information
Marketing
Operations
Finance
Solution:
Form a table from the given information to better understand the problem as below:
Name of Student
Gender
Institute
Major
Minor
Adriana
Female
Same as Deb
Bandita
Female
Chitra
Female
Daisy
Female
Same as Amit
Operations
Amit
Male
Same as Daisy
Barun
Male
Y
Operations
Chetan
Male
X
Finance
Deb
Male
Same as Adriana
Bandita and Chitra must be from Z. Since two females are from Z. So, this is the only possibility.
Three females are Minor in Marketing. So, Adriana, Bandita and Chitra must minor in Marketing.
Daisy must not be from Y Since females from Y must have a major in Operation but Daisy is a minor in Operations. Therefore, Adriana must be from Y and So Deb does.
Bandita and Chitra must be from X.
Female from Y i.e. must have a major in Operation. And males from Y have a minor in Finance.
Two male students major in Finance. Deb cannot be that one since He is a minor in Finance. So, Amit should be Majoring in Finance.
Name of Student
Gender
Institute
Major
Minor
Adriana
Female
Same as Deb (Y)
Operations
Marketing
Bandita
Female
Z
Marketing
Chitra
Female
Z
Marketing
Daisy
Female
Same as Amit (X)
Operations
Amit
Male
Same as Daisy (X)
Finance
Barun
Male
Y
Operations
Finance
Chetan
Male
X
Finance
Deb
Male
Same as Adriana (Y)
Finance
From the given information, the table will look like as shown.
Answer 1: (D)
Answer 2: (D)
Answer 3: (C)
Answer 4: (C) If Chitra does major in Finance then Bandita must major in Operations since only one female can do a major in Finance.
Prerequisite:
Knowledge of the basics of
Ranking
Direction Sense
Blood Relation
Knowledge of Linear and Circular Arrangement.
CAT Exam 2024 Preparation: Tips to solve CAT questions Puzzles based on distribution:
Following are some tips and tricks to solve the puzzles based on distribution:
Read each and every piece of information carefully.
Note down important clues and information in short form.
Form tables to mark the possibilities.
Eliminate the wrong possibilities.
Make pairs of related information.
Use the least information at last.
Solving more and more puzzles will help you to build your concept.
CAT syllabus 2024: References to Study (Theory)
Verbal and Non-Verbal Reasoning by R S Aggarwal. (Basic)
ELITES GRID for CAT (YouTube Channel)
CAT syllabus 2024: References to Study (Practice)
Verbal and Non-Verbal Reasoning by R S Aggarwal. (Basic)
LRDI for CAT and GMAT by Nishit K Sinha. (Advance)
CAT Exam Important Topic: To solve Problems on Sentence Correction
Problems of sentence correction involve errors based on
Wrong use of Tenses
Wrong uses of Articles, Propositions
Wrong use of Subject-Verb agreement
Error of Repetition
Error in the choice of phrases/ Words
CAT Exam Practice Questions on Sentence Correction
Sentence correction Questions
Q1. There is no more room for you in this compartment. [IPMAT 2020-IPM Rohtak]
there is no more seat
there is no more space
there is no more accommodation
No improvement
Answer: (4) No correction required
Q2. The place where her father disappeared and the reason why he did are unknown to her. [IPMAT 2020]
her father disappeared and the reason why he did
where her father disappeared and the reason he did
her father disappeared and the reason he did
where her father disappeared and the reason why he did
Answer: (B) The words ‘reason’ and ‘why’ both should not be used there.
Q3. The Municipal Council can no longer wash its hands off its responsibilities. [IPMAT 2020]
wash its hands from its
wash their hands off their
wash their hand of their
wash its hands of its
Answer: (B) Council will have more than one person so ‘their’ should come in place of ‘its’.
Q4. Though disposing of nuclear waste remains a concern, nuclear plants are often subsidized because of the steady, carbon-free power provided. [Based on CAT PYQ]
off nuclear waste remains a concern, nuclear plants are often subsidized because of the steady, carbon-free power provided.
of nuclear waste remains a concern, nuclear plants are often subsidized because of the steady, carbon-free power they provide.
off nuclear waste remains a concern, nuclear plants are often subsidized because of the steady, carbon-free power they provide.
No correction required
Answer: (B) ‘disposing of’ is the correct use of phrasal verbs. So, 1 and 3 cannot be the answer.
The verb should be in accordance with the subject and the subject here is ‘nuclear plants. The verb ‘provided’ should be replaced with ‘they provide’.
Prerequisite:
Noun, Pronoun, Verb
Tenses
Articles, Prepositions
Subject- Verb Agreement
CAT Tips and Tricks to Solve Problems in Sentence Correction:
Look out for time indicators (before, after, ago, while etc) to check whether the correct form of the verb is used.
Find the best option by examining each one.
To find the error in the underlined part, pay attention to the non-underlined part.
If you find two choices correct then choose the shorter choice.
Substitute the selected choice in the place of the underlined part and check whether it makes sense or not.
Use the elimination technique.
Attempt CAT sample papers.
Check online English sentence correction.
CAT Syllabus 2024: References to Study (Theory)
How to Prepare for Verbal Ability & Reading Comprehension for CAT by Meenakshi Upadhyay and Arun Sharma (9th Edition)
CAT Edurav (Youtube Channel)
CAT Syllabus 2024: References to Study (Practice):
Mastering the Verbal Ability for CAT by Ajay Singh
Hey! With an All India Rank (AIR) of 302,821 in NEET and belonging to the BCE category, it is highly unlikely to get a BDS seat in Telangana under the state quota, as the closing ranks for BCE are usually below 50,000. You may consider applying to private colleges under management quota or explore BDS seats in other states, but the chances remain very limited with this rank.
At KIMS Amalapuram, the internship stipend for MBBS students is generally reported to be around 20,000 per month, though some students have mentioned that in certain years no stipend was provided at all, which means it can vary depending on the policies in place at the time of your internship. To get the most accurate and updated information, it is always best to confirm directly with the college administration or recent interns, but on average, you can expect a stipend in the range of 18,000-20,000 per month during the compulsory rotating internship.
Since your payment status shows
"S"
, it means your payment is successful. The "payment unsuccessful" message on the form is likely a temporary system error or a delay in updating.
Do not make another payment.
Making a second payment could cause a double debit, which is difficult to get a refund for. You should:
Wait 24-48 hours
for the status to update automatically.
Download and save
a copy of your form and a screenshot of the "S" payment status as proof.
Check your bank statement
to confirm the money has been debited.
If the issue is not fixed after 48 hours,
contact the official CAT helpdesk
immediately with your transaction details.
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.
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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i.e, x1, x2, x3, ………, xn are n observations. w1, w2, ……., wn are their respective weights.
