Multiple choice general knowledge math & puzzles

Three years back, a father was 24 years older than his son. At present the father is 5 times as old as the son. How old will the son be three years from now?

  1. 12 years

  2. 6 years

  3. 3 years

  4. 9 years

  5. 27 years

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

Let son's age 3 years ago be s. Then father was s+24. Currently: son = s+3, father = s+24+3 = s+27. Given father = 5 × son: s+27 = 5(s+3). Solving: 4s = 12, so s = 3. Son's current age = 6, and three years from now he'll be 9. Option D is correct.