The ratio of present ages of A and B is 7 : 8. After 6 years from now, the ratio of their ages will be 8 : 9. If C's present age is 10 years more than the present age of A, then the present age (in years) of C is:

52

Lets assume present age of A is 7x and B is 8x

After 6 years, \(\frac{7x + 6}{8x + 6}\) = \(\frac{8}{9}\)

                    ⇒ 63x + 54 = 64x + 48

                    ⇒ x = 6

A's present age = 42

C's present age = 52 years