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 :
Solution
Correct Answer: Option A
Age of the 15th student = [15 \(\times\) 15 - (14 \(\times\) 5 + 16 \(\times\) 9)] = (225-214) = 11 years.
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