1 and copy 80 pages in 20 hours A and B together can copy 135 pages in 27 hours in what time can be copy 48 pages
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1 and copy 80 pages in 20 hours A and B together can copy 135 pages in 27 hours in what time can be copy 48 pages
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1 and copy 80 pages in 20 hours A and B together can copy 135 pages in 27 hours in what time can be copy 48 pages
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