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    Question

    The average of 16 numbers is 36.5. If four numbers of

    average x are added to them, then the average of all numbers increases by one. Find the value of x?
    A 44.50 Correct Answer Incorrect Answer
    B 40.50 Correct Answer Incorrect Answer
    C 41.50 Correct Answer Incorrect Answer
    D 46.50 Correct Answer Incorrect Answer

    Solution

    Average of 16 numbers is =36.5 total of 16 numbers =36.5×16 =584 If four numbers of average =x  total of 4 numbers = 4x ATQ- after Average increase by 1  (584+4x)/20 = 37.5 584+4x =37.5×20=750 4x = 166 x = 41.50

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