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CAT x is what % of y and word problems - Practice Questions & MCQ

Edited By admin | Updated on Oct 05, 2023 05:01 PM | #CAT

Quick Facts

  • 6 Questions around this concept.

Solve by difficulty

In an exam 52% of the candidates failed in science, 42% in maths and 17% in both. The number of those who passed in both subjects is:

A batsman scored 120 runs which included 3 boundaries and 8 sixes. What percent of his total score did he make by running between the wickets?

Concepts Covered - 1

x is what % of y and word problems
  • The concept of finding what percentage one value is of another is a fundamental part of percentage calculations.
  • It helps in understanding proportions and relative comparisons between values.
  • General formula: \( \text{Percentage} = \left(\frac{\text{Part}}{\text{Whole}} \right) \times 100 \)
  • For the concept "x is what % of y," we are given the value of x and y, and we need to find the percentage representation.

Word Problems - x is what % of y

  • Word problems often involve real-life scenarios where the application of the "x is what % of y" concept is required.
  • Let's solve some previous management entrance exam questions to understand this concept better:

Question 1: A company's revenue was ₹10,00,000, and the profit made was ₹2,00,000. What percentage of revenue is the profit?

Solution: Applying the formula,\( \text{Percentage} = \left(\frac{\text{Part}}{\text{Whole}} \right) \times 100 \)

Given: Part (Profit) = ₹2,00,000, Whole (Revenue) = ₹10,00,000

Percentage = \( \left(\frac{2,00,000}{10,00,000}\right) \times 100 = 20\% \)

Therefore, the profit is 20% of the revenue.

Question 2: Ravi obtained 670 marks out of 800 in an exam. What percentage of marks did he score?

Solution: Applying the formula, \( \text{Percentage} = \left(\frac{\text{Part}}{\text{Whole}} \right) \times 100 \)

Given: Part (Obtained Marks) = 670, Whole (Total Marks) = 800

Percentage = \( \left(\frac{670}{800} \right) \times 100 = 83.75\% \)

Therefore, Ravi scored 83.75% marks.

Tips and Tricks:

  • Remember the formula: \( \text{Percentage} = \left(\frac{\text{Part}}{\text{Whole}} \right) \times 100 \)
  • The "Part" in the formula represents the specific value you want to find the percentage of, and the "Whole" represents the total value.
  • While solving word problems, read the question carefully to identify the "Part" and "Whole" values.
  • Convert any fractions or decimals to percentages for easy comparison and interpretation of the solution.
  • Practice solving multiple problems using this concept to master the calculations quickly.

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