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26 December, 19:35

Suppose the 13 inch is aware cost $.78 at the same rate how much (in cents) will 33 inches of wire cost

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  1. 26 December, 19:59
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    When comparing to thing with same rate, set up a proportion:

    Inches/cost

    13/.78=33/x

    (13) (x) = (.78) (33) [cross multiplied]

    13x=25.74 [simplified]

    13/13x=25.74/13 [division property]

    x=1.98

    33 inches of wire will cost $1.98.
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