Question

A father said to himself, "At the time of your birth, my age was 5 years more than your present age". If the father's age is now 39 years, then how old was the son 5 years ago?​

Answer 1

Answer:

12

let the son's age be x

x years ago the father's age was x+5

so the father's age now is x+x+5=39

2x+5=39

x=17

son's present age is 17 so 5 years ago it is 17-5=12