SOLUTION: The total proceeds from a used book store sale were $250. A total of 91 books were sold. The books were priced at $2.50 and 3.00 each. How man more books were sold for $2.50 then w

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Question 391566: The total proceeds from a used book store sale were $250. A total of 91 books were sold. The books were priced at $2.50 and 3.00 each. How man more books were sold for $2.50 then were sold for $3.00?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
The total proceeds from a used book store sale were $250.
A total of 91 books were sold.
x + y = 91
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The books were priced at $2.50 and 3.00 each.
2.5x + 3y = 250
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How many more books were sold for $2.50 then were sold for $3.00?
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x = 91-y
Substitute for "x" and solve for "y":
2.5(91-y)+3y = 250
227.5 +0.5y = 250
0.5y = 22.5
y = 45 (# of books sold at $3.00
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x = 46 (# of books sold at $2.50
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Cheers,
Stan H.