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 27, then how old is B?	Pick
A) 11 years B) 10 years C) 18 years D) 189 years E) 28 years

Rationale: "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 = 27 5 x = 25 = > x = 5 hence , b ' s age = 2 x = 10 years . answer : b"
Answer: B