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    Question

    The average of x numbers is 24. If 60% of these numbers

    are reduced by 5 and the remaining 40% are increased by 10, what will be the new average of the x numbers?
    A 25 Correct Answer Incorrect Answer
    B 28 Correct Answer Incorrect Answer
    C 22 Correct Answer Incorrect Answer
    D 21 Correct Answer Incorrect Answer

    Solution

    Sum of тАШxтАЩ numbers = 24x
    New sum of the тАШxтАЩ numbers = 24x тАУ 0.6x ├Ч 5 + 0.4x ├Ч 10 = 25x
    Therefore, new average = 25x/x = 25

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