The average age of A, B and C is 25 years. If the average age of A and C is 29 years, what is the age of B in years ?  Select
A) 17 B) 35 C) 20 D) 32 E) 21

Rationale: "age of b = age of ( a + b + c ) â € “ age of ( a + c ) = 25 ã — 3 â € “ 29 ã — 2 = 75 â € “ 58 = 17 years a"
Answer: A