Question

5 years ago A man was 7 times as old as his son 5 years hence the father will be 3 times as old as his son find their present ages

Answer 1

sons age 9 fathers age 33

Answer 2

let ages of man and son today be m and s. From two conditions m- 5=7(s- 5) and m+5=3(s+5). Solution gives m=40 s=10 satisfies the conditions.