Multiple choice

A father's age is four times his son's age. If their age's sum is 40, so what is the father's age ?

  1. $48$
  2. $32$
  3. $8$
  4. $40$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let son's age = x, then father's age = 4x. Sum: x + 4x = 40, so 5x = 40, x = 8. Father's age = 4 × 8 = 32. Checking: 32 + 8 = 40 ✓ and 32 = 4 × 8 ✓. Options 48, 8, and 40 are incorrect.

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