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17 May, 04:14

4/5 of a class is girls and there are 8 boys. How many total in class.

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  1. 17 May, 04:33
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    40

    Step-by-step explanation:

    a+b=c

    a=girls

    b = boys

    c = total

    the statement tell us:

    4/5 of a class is girls:

    a = (4/5) * c

    boys=b=8

    c=a+b

    so we have:

    c = (4/5) * c + 8

    c - (4/5) * c=8

    (5c-4c) / 5 = 8

    c/5=8

    c=8*5

    c=40

    total=40
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