Average age of father and son = 28 years Total age of both father and son = 56 years Ratio of their age = 3x : 1x Let the age of son = x Age of father = 56 - x According to the statement, 3x + 1x = 56 4x = 56 x=
56
4
=14 Age of the son x = 14 years Age of the father = 56 - x = 56 - 14 = 42 years