The total age of A and B is 12 years more than the total age of B and C. C is how many years younger than A? Answers
A) C is younger than A  B) 6  C) 12  D) 24  E) None of these
Sol.   (A + B) - (B + C) = 12 ⇔ A - C = 12.   Answer 12
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The total age of A and B is 12 years more than the total age of B and C. C is how many years younger than A?