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      Question

      W and X together can complete a work in 40 days. X and Y

      together can complete the same work in 60 days. If W, X and Y all work together, then the same work gets completed in 30 days. How many days will W and Y together take to complete the same work? 
      A 45 days Correct Answer Incorrect Answer
      B 40 days Correct Answer Incorrect Answer
      C 50 days Correct Answer Incorrect Answer
      D 36 days Correct Answer Incorrect Answer

      Solution

      The correct answer is B

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