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28 November, 19:48

Heather sees that two stores have similar sales. store a says that 5 balloons will cost her $6.00 and store b says that 13 balloons will cost her $16.25. if she is planning on buying 27 balloons and wants to spend as little money as possible, which store should she buy from and how much would it cost her?

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  1. 28 November, 20:04
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    Do proportions for both

    5/6 = 27/x

    Cross multiply and divide

    27 x 6 divided by 5 is $32.4

    Next proportion:

    13/16.25 = 27/x

    Cross multiply and divide

    27 x 16.25 divided by 13 = $33.75

    So your answer store A with a cost of $32.4
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