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16 August, 07:31

By decreasing each dimension by 1 unit, the area of a rectangle decreased from 30 square feet to 18 square feet. Find the percent decrease in area

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  1. 16 August, 11:03
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    The answer is 30

    Explain and show your work

    40/100 = 40-28/x

    40/100=12/x

    40x/40 = 1200/40

    X=30
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