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15 April, 17:43

The mean of a set of five numbers is 4.8. Given that the sixth number is x and the mean of these six numbers is 5.5, find the value of x.

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  1. 15 April, 20:57
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    Given that the mean of the five numbers is 4.8, the total of the numbers will be:

    5*4.8

    =24

    after adding x, the total will be:

    (24+x)

    the mean will be:

    (24+x) / 6=5.5

    solving for x we get:

    24+x=33

    hence

    x=33-24

    x=9

    The sixth number is 9
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