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If b books cost d dollars, which expression represents the unit cost per book?Answer Choice: A. b/d B. d/b C.bd D. b+d

User Yuday
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We have the following:

d dollars is the total amount of dollars that all the books cost, and b is the number of books that were purchased.

Therefore, to know what a book costs, we must divide the total amount in dollars by the number of books there are, which would be the following:


(d)/(b)

Therefore, the answer is B. d/b

User Okyanet
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