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    Question

    The average age of a group of 15 students is 32 years.

    Two persons of age 48 years and 32 years, left the group and 2 persons of age 54 years and 101 years, joined the group. Find the new average age of the group.
    A 37 years Correct Answer Incorrect Answer
    B 31 years Correct Answer Incorrect Answer
    C 38 years Correct Answer Incorrect Answer
    D 40 years Correct Answer Incorrect Answer

    Solution

    Required average = {(15 × 32) – 48 – 32 + 54 + 101}/15 = 37 years

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