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    Question

    The average of n numbers is 62. If each of 55% of

    the numbers is increased by 18 and each of the remaining numbers is decreased by 12, then the new average of the numbers will be
    A 66.5 Correct Answer Incorrect Answer
    B 62.5 Correct Answer Incorrect Answer
    C 57.5 Correct Answer Incorrect Answer
    D 63.5 Correct Answer Incorrect Answer

    Solution

    Average = 62 + (55 x 18 - 45 x 12/100) = 62 + 4.5 = 66.5

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