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The question is from CAT Ratio, Mixtures and Averages. How much water should be added to increase the water in a mixture to a certain part? CAT exam is known to test on basics rather than high funda ideas. A range of CAT questions can be asked from Ratios and Proportions, Mixtures, Alligations and Averages. Make sure you master the topics. 2IIMs CAT questions bank provides you with CAT questions that can help you gear for CAT Exam CAT 2023.

Question 32: A mixture of 40 litres of milk and water, contains 20% of water. How much water must be added to the above mixture to make the water 25% of the resultant mixture?

  1. 3 l
  2. 2.33 l
  3. 2.67 l
  4. 4 l

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Explanatory Answer

Method of solving this CAT Question from Ratio, Mixtures and Averages: When we mix two mixtures in a particular ratio, we get a third mixture. Given the third mixture how does one find the ratio in which they were mixed.

Focus on water since it is the item of interest in the question.
Therefore,
CAT Question - Ratio and Proportion 8
Therefore,
Mixture: Water = 15:1 => \\frac{40}{15}\\) litres of water must be added = 2.67 l

The question is "How much water must be added to the above mixture to make the water 25% of the resultant mixture?"

Hence, the answer is "2.67 l".

Choice C is the correct answer.

 


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