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A can do a piece of work in 14 days which B can do in 21 days. They begin together, but 3 days before the completion of the work, A leaves off. The total number of days to complete the work is |
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Answer» A can do a piece of work in 14 days which B can do in 21 days. They begin together, but 3 days before the completion of the work, A leaves off. The total number of days to complete the work is |
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