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If Jan can buy 10 copies of a certain book for $40, what is the unit rate for cost per copy? How much would it cost her to buy 20 copies at the same rate?

If Jan can buy 10 copies of a certain book for $40, what is the unit rate for cost per copy? How much would it cost her to buy 20 copies at the same rate?
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If Jan can buy 10 copies of a certain book for $40, what is the unit rate for cost per copy? How much would it cost her to buy 20 copies at the same rate?

User Frizz
by
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1 Answer

2 votes

Answer:

Unit cost is $4 per copy and for 20 copies the charges are $80

Explanation:

User Reza Keshavarz
by
8.3k points
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