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Mathematical Puzzles Medium 3 min

A father is three times as old as his son. Eight years from now, the father will be twice as old as the son. How old are they now?

Hint
Let the son be x years old.

Answer

Son = 8 years; Father = 24 years.

Explanation

Let the son be x and father 3x. After eight years, 3x + 8 = 2(x + 8). Solving gives x = 8.

Step-by-Step Solution

3x + 8 = 2x + 16.
x = 8.
Father = 3 × 8 = 24.
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