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    Question

    The average age of a group of 15 students is 20 years.

    Two persons of age 30 years and 44 years, left the group and 2 persons of age 25 years and 34 years, joined the group. Find the new average age of the group.
    A 17 years Correct Answer Incorrect Answer
    B 19 years Correct Answer Incorrect Answer
    C 13 years Correct Answer Incorrect Answer
    D 20 years Correct Answer Incorrect Answer

    Solution

    Required average = {(15 ├Ч 20) тАУ 30 тАУ 44 + 25 + 34}/15 = 19 years

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