Multiple choice general knowledge math & puzzles

Father is aged three times more than his son Johnny. After 8 years, he would be two and a half times of Johnny's age. After further 8 years, how many times would he be of Johnny's age?

  1. 2 times

  2. 2.5 times

  3. 2.75 times

  4. None of these

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

Let Johnny's age = x. Father = 4x (three times more means four times as much). After 8 years: 4x + 8 = 2.5(x + 8). Solving: 4x + 8 = 2.5x + 20, so 1.5x = 12, x = 8. After 16 more years (total 24 years from now), Johnny = 32, Father = 64. Ratio = 64/32 = 2 times.