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      Question

      If 4 kg of metal of which 1/3rd is zinc and

      the rest is copper, be mixed with 5kg of metal, of which 1/6 is zinc and the rest is copper, then what will be the ratio of zinc to copper in the mixture?
      A 23:31 Correct Answer Incorrect Answer
      B 13:41 Correct Answer Incorrect Answer
      C 31:41 Correct Answer Incorrect Answer
      D 41:27 Correct Answer Incorrect Answer
      E 31:14 Correct Answer Incorrect Answer

      Solution

      In 4 kg of metal Zinc Copper 4 ×1/3 4 ×2/3 4/3 8/3 In 5 kg of metal Zinc Copper 5 ×1/6 5 ×5/6 Now, new ratio = (4/3+ 5/6)/(8/3+ 25/6) = 13:41

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