G3melyndreseniferna G3melyndreseniferna

18-06-2016
Mathematics

contestada

Suppose that
14
inches of wire costs
70
cents.
At the same rate, how much (in cents) will
9
inches of wire cost

Respuesta :

19-06-2016

Put your information into a ratio
14 : 70 (wire : cost)

Change the amount of wire to 9

14/14 : 70/14
1 : 5
1 X 9 : 5 X 9
9: 45

Therefore 9 inches of wire costs 45 cents :)

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