Railways PYQCBT 1 2016

RRB NTPC · Question 21

The sum of the ages of a father and his son is 49 years. Their age ratio is 5 ∶ 2. So what will be the age of the son after 5 years? A. 12 B. 19 C. 14 D. 21

  1. A

  2. C

  3. D

  4. B

Show answer & explanation

Answer: (D) B

Explanation

5 + 2 = 7 parts = 49 years, so 1 part = 7: the son is 14. After 5 years he will be 19.