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      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.
      A 3 Correct Answer Incorrect Answer
      B 1 Correct Answer Incorrect Answer
      C 4 Correct Answer Incorrect Answer
      D 2 Correct Answer Incorrect Answer

      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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