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      Question

      In a mixture of liquids P, Q, and R, the ratio of the

      quantity of liquid P to liquid Q is 3:2 respectively. If the amount of liquid R is 21 ml and it constitutes 30% of the total mixture, find the quantity of liquid Q in the mixture.
      A 19.6 ml Correct Answer Incorrect Answer
      B 16.6 ml Correct Answer Incorrect Answer
      C 44.5 ml Correct Answer Incorrect Answer
      D 37.3 ml Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      ATQ,

      Let the quantity of liquid P and liquid Q in the mixture be ‘3x’ ml and ‘2x’ ml respectively. Total quantity of mixture = 21 / 0.30 = 70 ml Total quantity of liquid P and liquid Q = 70 – 21 = 49 ml So, quantity of liquid Q = (2x / 5x) × 49 = 19.6 ml

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