SOLUTION: ABC Bookstore sold 2,500 copies of Algebra books this second semester and 670 copies remained unsold. What percent of the total number of copies did the store sell?

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Question 206380: ABC Bookstore sold 2,500 copies of Algebra books this second semester and 670 copies remained unsold. What percent of the total number of copies did the store sell?
Found 2 solutions by stanbon, MathTherapy:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
ABC Bookstore sold 2,500 copies of Algebra books this second semester and 670 copies remained unsold. What percent of the total number of copies did the store sell?
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# sold = 2500 - 670 = 1830
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Percent sold = 1830/2500 = 73.2%
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Cheers,
Stan H.

Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

Since the store sold 2,500 copies and 670 copies remain unsold, then the total amount of books they had for sale was 3,170 (2,500 + 670).

Since 2,500 copies out of 3,170 copies were sold, then the percent of the total copies sold is:
2500%2F3170%2A100 = 25000%2F317 = highlight_green%2878.86%29%.