Question

Five years ago A was thrice as old as B and 10 years later A will be twice as old as B. The age of B is:

Answer 1

×=2y=10
×=2*20=10
×=40=10
×=10+40
×=50
hence, present age of 'a' and 'b' is
a=50
b=20
hope,,it will help