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OpenStudy (anonymous):
Photocopying. Quick Copy recently charged 49¢ per page for color copies and 7¢ per page for black-and-white copies. If Shirlee’s bill for 90 copies was $11.34, how many copies of each type were made?
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OpenStudy (anonymous):
0.49c+0.07bw=11.34 c+bw = 90
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