Question

A man is 42 years old and his son is 12 years old after how many years will the age of the sun be half the age of father at that time

Answer 1

let the number of years be x. then
$12 + x = \frac{42 + x}{2} \\ 24 + 2x = 42 + x \\ x = 18$

Answer 2

Answer:

Please check the answer given below