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

User Sundq
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3 votes
40/12=3.33
3.33x18= 59.94
User Alwin Kesler
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