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      Question

      A container has only two types (P and Q) of oil in the

      ratio 7:3 respectively. When 80 litre of oil Q is added to theĀ  containerĀ the quantity of oil P becomes 25% of that of oil Q. Find the capacity of theĀ  containerĀ if it becomes full after addition of 80 litre of oil.
      A 225 litres Correct Answer Incorrect Answer
      B 105 litres Correct Answer Incorrect Answer
      C 112 litres Correct Answer Incorrect Answer
      D 180 litres Correct Answer Incorrect Answer

      Solution

      Let the quantity of oil in the containerĀ be 7x and 3x litres respectively. According to the question, => 7x = 0.25 Ɨ (3x + 80) => 6.25x = 20 => x = 3.2 Total capacity of the containerĀ = 7x + 3x + 80 = 112 litres.

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