The sum of the present ages of A and B is 80 years. 14 years ago the ratio of the age of A and B was 7 : 6 . Find the present age of A.

42

Sum of present age of A & B = 80

Sum of age of A & B, 14 years ago = 80 - 28 = 52

ATQ,

Ratio of             A    :     B

14 years ago     7    :     6      = 13 ( sum of 7 & 6 ) 

13R =52

1R = 4

A's age, 14 years ago = 7R = 7× 4 = 28

A's present age = 28 + 14 = 42 years.