Question

A father said to his son, "i was as old as you are at the present at the time of your birth". If the father's age is 38 years now, what was the son's age five years back?

Answer 1

Let the son's present age be x years. Then, (38 - x) = x

 2x = 38.

 x = 19.

 Son's age 5 years back (19 - 5) = 14 years.