Question

five 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 full stop find their present ages

Answer 1

here is your answer mate
hope this will help you

Answer 2

let the son's age be x.
then fathers age=7x
five years from now=
father's age= 7x+10
son's age= x+10
given,
7x+10 = (x+10)3
7x+10= 3x+30
4x=20
x=5
so, father's present age= 7×5+5= 40
and son's age= 5+5=10