In 10 years, A will be twice as old5as B was 10 years ago. If A is now 9 years older than B, the present age of B is Choose the correct choice:
A) 35 B) 37 C) 39 D) 41 E) 46
Explanation:   Let B's age = x years.   Then, As age = (x+ 9) years.   (x+9+10)=2(x�10)   hence x=39.   Present age of B = 39 years   Answer: Option 39
<result>C</result>
In 10 years, A will be twice as old5as B was 10 years ago. If A is now 9 years older than B, the present age of B is