In 10 years A will be twice as old as B was 10 years ago If A is now 9 years older than B the presen...........

Quantitative Aptitiude (CLAT) Problems based on Ages

In 10 years, A will be twice as old as B was 10 years ago. If A is now 9 years older than B, the present age of B is :

Let B's present age = x years. Then, A's present age = (x + 9) years.
(x + 9) + 10 = 2(x - 10)

=> x + 19 = 2x - 20

=> x =39.

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