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      Question

      A can complete a piece of work in 18 days. B can

      complete the same work in 72 days. While C is 33(1/3)  more efficient than B. All three started working together. A left 8 days before the work was completed, and C left 17 days before but B continued to work till the end, for how many days did A work?
      A 9 days Correct Answer Incorrect Answer
      B 10 days Correct Answer Incorrect Answer
      C 15 days Correct Answer Incorrect Answer
      D 12 days Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Given  C is 33.33% is more efficient than B. But A left before 8 days = 18-8 = 10 Days So A worked only 10 Days.

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