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, the son's age five years back was:
14 years.
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.