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 Answers:
A) 9 years
B) 11 years
C) 14 years
D) 21 years
E) 25 years
Solution   Age of the 15th student	=[15x15-(14x5+16x9)]   = (225 - 214)= 
<gadget id="calculator">(225 - 214)</gadget>
<output>11</output>
11 years.   Answer 11 years
<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