The total age of A and B is 10 years more than the total age of B and C. C is how many year younger than  Select the correct option:
A) 14 years B) 12 years C) 56 years D) 10 years E) 55 years

Rationale: "given that a + b = 10 + b + c = > a â € “ c = 10 + b â € “ b = 10 = > c is younger than a by 10 years answer : d"
Answer: D