The total age of A and B is 16 years more than the total age of B and C. C is how many year younger than  Choices:
A) 14 years  B) 12 years  C) 56 years  D) 16 years  E) 55 years

Rationale: "given that a + b = 16 + b + c = > a â € “ c = 16 + b â € “ b = 16 = > c is younger than a by 16 years answer : d"
Answer: D