If Jan can buy 12 copies of a certain book for $40, what is the unit rate for cost per copy? How much would it cost her to buy 18 copies at the same rate?

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asked Aug 25, 2022 83.8k views

1 vote

If Jan can buy 12 copies of a certain book for $40, what is the unit rate for cost per copy? How much

would it cost her to buy 18 copies at the same rate?

Mathematics
high-school

Andreas Haferburg asked

by Andreas Haferburg

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Answer:

12 copies=$40

1 copy=$40÷12=$3.33

18 copies=$3.33×18=$60

Jchrbrt answered Aug 29, 2022

by Jchrbrt

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