Problems on Ages

J&K Bank PO · Quantitative Aptitude · 81 practice questions with answers and explanations: 43 Easy, 37 Medium, 1 Hard.

Sample questions

Sample Easy question 1

The ages of A and B are in the ratio 3 : 5 and their sum is 40 years. Find A's age.

  1. 15
  2. 20
  3. 12
  4. 25
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Answer: A. A = 3/8 × 40 = 15 years.

Sample Easy question 2

Zoya's present age is 23 years. What will it be after 13 years?

  1. 36
  2. 10
  3. 299
  4. 37
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Answer: A. 23 + 13 = 36 years.

Sample Easy question 3

Ravi is 30 years old now. How old was this person 8 years ago?

  1. 22
  2. 37
  3. 38
  4. 23
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Answer: A. 30 − 8 = 22 years.

Sample Medium question 4

The ages of Zoya and Farah are in the ratio 3 : 5, and the sum of their ages is 32 years. What is the age of Farah (in years)?

  1. 12
  2. 24
  3. 20
  4. 27
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Answer: C. One part = 32/8 = 4; Farah's age = 5 × 4 = 20 years.

Sample Medium question 5

The ages of Rohit and Ravi are in the ratio 5 : 6, and the difference between their ages is 3 years. What is Rohit's age (in years)?

  1. 12
  2. 18
  3. 15
  4. 3
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Answer: C. One part = 3/1 = 3; Rohit's age = 5 × 3 = 15 years.

Sample Medium question 6

A father is 3 times as old as the son. Their present ages add up to 68 years. What is the son's present age (in years)?

  1. 17
  2. 20
  3. 51
  4. 22
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Answer: A. Let son = x; 3x + x = 68, so x = 17.

Sample Hard question 7

Ten years ago a father was 12 times as old as his son; ten years from now he will be twice as old as his son. Find the son's present age.

  1. 14
  2. 15
  3. 10
  4. 12
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Answer: D. f − 10 = 12(s − 10) and f + 10 = 2(s + 10). Eliminating f: 12s − 110 = 2s + 10, so s = 12 (and f = 34).

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