In 10 years, A will be twice as old as B was 10 years ago. If A is now 5 years older than B the present age of B is Pick one.
A) 37	B) 38	C) 39	D) 35	E) 41
let present age of A be a and B be b   a+10 = 2*(b-10)   =&gt; 2b-a = 30 ......(i)   a = b+5   =&gt;2b-b-5 = 30   b=35   so the present age of b is 35 years   ANSWER:35
<result>D</result>
In 10 years, A will be twice as old as B was 10 years ago. If A is now 5 years older than B the present age of B is