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Railways PYQCBT 1 2016

RRB NTPC · Question 29

The ratio of ages of Jai and Joy is 5 : 2. The sum of their ages is 63. After 9 years what will be the ratio of their ages? A. 5 : 2 B. 2 : 1 C. 3 : 2 D. 4 : 3

  1. C

  2. B

  3. A

  4. D

Show answer & explanation

Answer: (B) B

Explanation

Ages are 5x and 2x with 7x = 63, so x = 9: Jai is 45 and Joy is 18. After 9 years they will be 54 and 27, and the ratio = 54 : 27 = 2 : 1.