In 10 years, A will be twice as old as B was 10 years ago. If A is now 8 years older than B the present age of B is	Choose the correct answer.
A) 37	B) 38	C) 39	D) 40	E) 41
let present age of A be a and 38 be b   a+10 = 2*(b-10)   =&gt; 2b-a = 30 ......(i)   a = b+8   =&gt;2b-b-8 = 30   b=38   so the present age of b is 38 years   ANSWER:38
<result>B</result>
In 10 years, A will be twice as old as B was 10 years ago. If A is now 8 years older than B the present age of B is