Multiple choice

A father is three times as old as his son. After twelve years, his age will be twice that of his son. Find their present ages.

  1. 10, 30

  2. 12, 36

  3. 6, 36

  4. 124, 24
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let son's age be x, father's be 3x. After 12 years: 3x + 12 = 2(x + 12). 3x + 12 = 2x + 24. x = 12. Son is 12, father is 36.

AI explanation

Let the son's present age be x years and the father's present age be 3x years. After 12 years, their ages will be (x + 12) and (3x + 12) respectively. Using the given condition, 3x + 12 = 2(x + 12), which simplifies to 3x + 12 = 2x + 24, yielding x = 12. Therefore, the son is 12 years old and the father is 36 years old.

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