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      Question

      240 ml of mixture A containing oil and vinegar in the

      ratio of 5:3 respectively is mixed with another 120 ml of mixture B containing oil and vinegar in the ratio of 2:1 respectively. Find the ratio of oil to vinegar in the resultant mixture.
      A 23:13 Correct Answer Incorrect Answer
      B 25:15 Correct Answer Incorrect Answer
      C 21:11 Correct Answer Incorrect Answer
      D 27:17 Correct Answer Incorrect Answer
      E 24:14 Correct Answer Incorrect Answer

      Solution

      Quantity of oil in 240 ml of mixture A = 5/8 ร— 240 = 150 ml
      Quantity of vinegar in 240 ml of mixture A = 3/8 ร— 240 = 90 ml
      Quantity of oil in 120 ml of mixture B = 2/3 ร— 120 = 80 ml
      Quantity of vinegar in 120 ml of mixture B = 1/3 ร— 120 = 40 ml
      Desired Ratio = (150 + 80):(90 + 40) = 230:130 = 23:13

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