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20 April, 06:50

A health club offers membership for a fee of $21 plus a monthly fee of $28. club b offers a membership for a fee of $42 plus a monthly fee of $21 after how many months will the total cost be the same

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  1. 20 April, 06:51
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    Club A: C=cost M = #of months

    C=28m+21

    Club B:

    C=21m+42

    Make them equal each other

    28m+21=21m+42

    -21m - 21m

    7m+21=42

    -21 - 21

    7m=21

    /7 / 7

    m=3

    so in 3 months the cost would be equal
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