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      Question

      The efficiency of A is twice that of B. Both working

      together can finish a piece of work in 18 days. In how many days B alone can finish the work?
      A 27 Correct Answer Incorrect Answer
      B 63 Correct Answer Incorrect Answer
      C 45 Correct Answer Incorrect Answer
      D 54 Correct Answer Incorrect Answer

      Solution

      A = 2B Therefore, A/B = 2/1 Total work done = (2 + 1) Γ— 18 = 54 Therefore, B can complete the work in = 54/1 = 54 days

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