The average age of 15 students of a class is 15 years. Out of these, the average age of 7 students is 14 years and that of the other 7 students is 16 years, The age of the 15th student is
Select
A) 11	B) 12	C) 13	D) 14	E) 15
Explanation:   Age of the 15th student = [15 * 15 - (14 * 7 + 16 * 7)= 
<gadget id="calculator">15 * 15 - (14 * 7 + 16 * 7)</gadget>
<output>15</output>
15 years. Answer: 15
<result>E</result>
The average age of 15 students of a class is 15 years. Out of these, the average age of 7 students is 14 years and that of the other 7 students is 16 years, The age of the 15th student is