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mars1129 [50]
4 years ago
11

How do I solve this problem?

Mathematics
1 answer:
REY [17]4 years ago
8 0
This can be modelled as an inequality:

Profit > costs
Let x be the number of books, so: 
15x > 4x + 3500 
11x > 3500
x > 3500 / 11
x > 318.18
so you need to sell 319 books.

Hope that helped!
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