The sum of the present ages of A and B is 60 years. 12 years ago the ratio of the age of A and B was 5 : 4. Find the present age of A.

32 years

Sum of present age of A & B = 60

Sum of age of A & B, 12 years ago = 60 - 24 = 36

ATQ,

                        A    :     B

12 years ago:    5    :     4   =    9

9R =36

1R = 4

A's age, 12 years ago = 5R = 5× 4 = 20

A's present age = 20 + 12 = 32 years.