Question

The age of the father is 42, the age of the son is 9. After how many years will the father be twice as the age of the son?

Answer 1

24 years

Explanation:

First, I will set up an equation.

2(9 + x) = 42 + x

18 + 2x = 42 + x

x = 24

9 + 24 = 33

42 + 24 = 66

66 is 2 times 33.