Ten years hence, the ratio of the age of A to B will be 13:10, respectively. If the difference between the present ages of A and B is 6 years, then find B's present age (in years).
Let the age of A and B after ten years be 13x and 10x respectively.
ATQ,
(13x-10)-(10x-10)=6
3x=6
x=2
Required age = 10x-10=20-10=10 years
Alternate solution,
The difference between age of any person is always same.
So,
13x – 10x = 6
3x = 6
2 = x
Age of B = 10x – 10 = 10 years
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