The total age of A and B is 15 years more than the total age of B and C. C is how many year younger than	Pick.
A) 14 years  B) 12 years  C) 56 years  D) 66 years  E) 15 years

Rationale: "given that a + b = 15 + b + c = > a â € “ c = 15 + b â € “ b = 15 = > c is younger than a by 15 years answer : e"
Answer: E