2023 · Q116
The ages of Mr. Kumar and his son are in the ratio 5:3. Fifteen years back this ratio was 2 :1. What was the age (in years) of Mr. Kumar when his son was born?
General Mental Ability, Quantitative Aptitude and StatisticsNumber system and arithmetic
- A30
- B35
- C40
- D45
Explanation
Let the present ages be 5k and 3k. Fifteen years ago (5k-15)/(3k-15) = 2/1, giving 5k - 15 = 6k - 30, so k = 15. Mr. Kumar is 75 and his son 45, a difference of 30 years, which is Kumar's age when his son was born. Hence A.