The average age of 15 students of a class is 15 years. Out of these, the average age of 5 students is 14 years and that of the other 9 students is 16 years. The age of the 15th student is?  Choose the correct answer:
A) 9	B) 11	C) 15	D) 12	E) 20
Age of the 15th student = 15*15 - (14*5+16*9) = 225-214= 
<gadget id="calculator">225-214</gadget>
<output>11</output>
11 years   Answer is 11
<result>B</result>
The average age of 15 students of a class is 15 years. Out of these, the average age of 5 students is 14 years and that of the other 9 students is 16 years. The age of the 15th student is?