HELP MATH PROBLEM?? thanks!
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HELP MATH PROBLEM?? thanks!

[From: ] [author: ] [Date: 11-08-15] [Hit: ]
What is the break-even point for this bookstore?A.b.c.d.n=30-profit on each book is $3,......
Bookstore costs $90 a day to keep open, and it spends $13 for each book that it sells. If each book sells for $16. What is the break-even point for this bookstore?
A.n=30
b.n=13
c.n=16
d.n=3

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Profit = -90 -13n + 16n
Profit = -90 + 3n
90=3n
n=30

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profit on each book is $3, so $90/day / 3$/book = 30 books / day
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