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      Question

      There is a 99 litres mixture (soda + water), such that

      ratio of quantities of soda and water in it is 6:5, respectively. How much quantity of soda should be mixed in this mixture so that the ratio of quantities of soda to that of water will become 9:5?
      A 22 litres Correct Answer Incorrect Answer
      B 25 litres Correct Answer Incorrect Answer
      C 27 litres Correct Answer Incorrect Answer
      D 26 litres Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Quantity of soda in 99 litres of mixture = (6/11) ├Ч 99 = 54 litres Quantity of water in 99 litres of mixture = (5/11) ├Ч 99 = 45 litres According to question, Water remains same till the end of the process, So final quantity of soda in the mixture = 45 ├Ч (9/5) = 81 litres Quantity of soda to be added = 81 тАУ 54 = 27 litres

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