Question

The present ages of AandB are in thr ratio 7:12 , 15 years ago the ratio of their ages was4:9 the present age is

Answer 1

Let the age of A be 7x

and the age of B be 12x

A/Q

7x -15/ 12x -15 = 4/9

9(7x - 15) = 4(12x - 15)

63x - 135 = 48x - 60

63x - 48x = -60 + 135

15x = 75

x = 75/15

x = 5

Hence, age of A = 7x

= 7*5

=35

and age of B = 12x

= 12*5

= 60