Question

The ages of A & B are in the ratio 5:3.After 6 years,their àges will be in the ratio 7:5.then the percentàge of A is ?

Answer 1

age of A = 5x

age of B = 3x

after 6 years ago,

ages of A = 5x + 6

B = 3x + 6

a/q

( by cross multiplying )

5(5x + 6) = 7(3x + 6)

25x + 30 = 21x + 42

25x - 21x = 42 - 30

4x = 12

: . x = 3 .

age of A = 5 × 3 = 15.

B = 3 × 3 = 9.