A is two years older than B who is twice as old as C. If the total of the ages of A, B and C be 37, the how old is B? Answers:  A) 7  B) 9  C) 8  D) 14  E) 10

Rationale: explanation : let c ' s age be x years . then , b ' s age = 2 x years . a ' s age = ( 2 x + 2 ) years . ( 2 x + 2 ) + 2 x + x = 37 ⇒ 5 x = 35 ⇒ x = 7 . hence , b ' s age = 2 x = 14 years . answer : d
Answer: D