Multiple Choice Questions on The average age of 15 students of a class is 15 years Out of these the average age of 5 students is ........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

The average age of 15 students of a class is 15 years Out of these the average age of 5 students is ...........

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    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 :

    11

    Correct Answer

    15

    Incorrect Answer

    19

    Incorrect Answer

    13

    Incorrect Answer
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    Explanation:

    Age of the 15th student = [15 * 15 - (14 * 5 + 16 * 9)] = (225-214) = 11 years.

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