The average age of 15 students of a class is 15 years. Out of these, the average age of 4 students is 14 years and that of the other 10 students is 16 years, The age of the 15th student is Answers.
A) 11  B) 12  C) 9  D) 14  E) 15
Explanation:   Age of the 15th student = [15 * 15 - (14 * 5 + 16 * 9)] = 9 years. Answer: 9
<result>C</result>
The average age of 15 students of a class is 15 years. Out of these, the average age of 4 students is 14 years and that of the other 10 students is 16 years, The age of the 15th student is