If the average of t, b, c, 14 and 15 is 12. What is the average value of t, b, c and 29	Choose the correct choice from the following answers:  A) 12  B) 13  C) 14  D) 15  E) 16

Rationale: t + b + c + 14 + 15 = 12 * 5 = 60 = > t + b + c = 60 - 29 = 31 t + b + c + 29 = 31 + 29 = 60 average = 60 / 4 = 15 answer d
Answer: D