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On a Christmas package, Audrey needs to use only 40-cent stamps and 16-cent stamps. If she uses twice as many 40-cent stamps as 16-cent stamps, how many of each type of stamp must she use to mail a package costing $5.76 in postage?

  • Math - ,

    number of 16 cent stamps --- x
    number of 40 cent stamps ---- 2x

    16x + 40(2x) = 576
    96x = 576
    x = 6

    .... state your consclusion

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