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31 August, 06:39

At a special sale, all pens are sold at one price and all pencils at another price. If 3 pens and 2 pencils are sold for 47 cents while 2 pens and 3 pencils are sold for 38 cents what is the cost of a set of one pen and one pencil in cents?

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  1. 31 August, 07:23
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    3 pen + 2 pencil =.47

    2 pen + 3 pencil =.38

    2 (3pen + 2 pencil =.47)

    -3 (2pen + 3 pencil =.38)

    6 pen + 4 pencil =.94

    -6 pen - 9 pencil = - 1.14

    - 5 pencil = -.2

    pencil =.04

    3pen + 2 (.04) =.47

    3pen +.08 =.47

    3 pen +.08 -.08 =.47 -.08

    3 pen =.39

    pen =.13

    Pen = 13 cents and pencil = 4 cents
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