Multiple choice

The sum of the present age of the father and the son is 60 years. Six year ago, the father was 5 times as old as his son. The age of the son after 6 year will be

  1. 20

  2. 14

  3. 12

  4. 18

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Let the son's present age be x. Father's age is 60-x. Six years ago: (60-x-6) = 5(x-6), meaning father was 5 times as old as the son. Solving: 54 - x = 5x - 30, giving 6x = 84, so x = 14. Son is 14 years old now. After 6 years, son will be 14 + 6 = 20 years old.