The average age of 16 persons in a office is 15 years. Out of these, the average age of 5 of them is 14 years and that of the other 9 persons is 16 years. The age of the 15th person is?	Choose the correct choice from the following answers.
A) 9  B) 11  C) 15  D) 12  E) 26

Rationale: "age of the 15 th student = 16 * 15 - ( 14 * 5 + 16 * 9 ) = 240 - 214 = 26 years answer is e"
Answer: E