Question
A and B can complete a piece of work in 13 and 17 days
respectively. A begins to do the work, and they work alternatively one at a time for one day each. The whole work will be completed in.Solution
AB 1317 221 – T.W 1713 Working fashion = (A, B, A, B,) 2 days = 30 units 14 days = 210 units  15 days = 11/ 17 days = 221 units  Total time = (14+11/17) =14(11/17) days
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