Question

a father is four times as old as his son in four year time he will be three year times as old as his son what are their present ages.?

Answer 1

Son = a

father = 4a

After 4years

Son = a + 4

Father 4a + 4   or  3(a+4)

4a + 4 = 3a + 12

a = 8

Son's present age = 8 years

Father's present age = 32years