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      Question

      A and B together can knit a sweater in 255 hours, B and

      C can knit it together in 170 hours, while A and C can knit it together in 204 hours. How many hours will A, B and C together take to knit the sweater?
      A 119 Correct Answer Incorrect Answer
      B 136 Correct Answer Incorrect Answer
      C 153 Correct Answer Incorrect Answer
      D 102 Correct Answer Incorrect Answer

      Solution

      The correct answer is B

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