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      Question

      A container contains 720 litres of oil and kerosene

      mixed in the ratio 5:7. If β€˜z’% of the total mixture is removed, and the amount of kerosene removed is 189 litres, then find β€˜z’.
      A 45 Correct Answer Incorrect Answer
      B 60 Correct Answer Incorrect Answer
      C 50 Correct Answer Incorrect Answer
      D 40 Correct Answer Incorrect Answer

      Solution

      ATQ,

      (z/100) Γ— 720 Γ— (7/12) = 189

      z = 45

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