SOLUTION: if 5 pens cost �3.60, find the cost of 12 pens?

SOLUTION: if 5 pens cost �3.60, find the cost of 12 pens?

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Question 731813: if 5 pens cost �3.60, find the cost of 12 pens?

Answer by rfer(16322) (Show Source): You can put this solution on YOUR website!
5/3.60=12/x
5x=12*3.60
5x=43.20
x=43.20/5
x=8.64
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