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      Question

      X is 60% more efficient than Y, and Y alone can do a

      work in 80 days. Working together, X and Y will complete 52% of the same work in:
      A 16 days Correct Answer Incorrect Answer
      B 15 days Correct Answer Incorrect Answer
      C 18 days Correct Answer Incorrect Answer
      D 20 days Correct Answer Incorrect Answer

      Solution

      The correct answer is A

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