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14-11-2017
Mathematics

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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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14-11-2017

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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