1
A copy machine makes 60 copies per minute. A second
copy machine makes 80 copies per minute. The second
machine starts making copies 2 minutes after the first
machine starts. Both machines stop making copies
8 minutes after the first machine started. Together, the
2 machines made how many copies?
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A. 480
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B. 600
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C. 680
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D. 720
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E. 960