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21 May, 17:40

Karen spends $450 on monthly bills. Of this total amount, 12% is for phone service, 1/10 is for internet service, and 2/9 is for utilities. If the rest of the total amount is for food, how much does Karen have for food?

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  1. 21 May, 17:44
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    12% = 0.12 = 12/100 = 108/900

    1/10 = 90/900

    2/9 = 200/900

    108/900 + 90/900 + 200/900 = 398/900 used

    900 - 398 = 502

    502/900 = 251 / 450

    251/450 * 450 = 251

    Karen has $251 for food
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