Multiple Choice Questions on A container contains 64 litres of pure milk One fourth of the milk is replaced by water Again the op........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

A container contains 64 litres of pure milk One fourth of the milk is replaced by water Again the op...........

Quantitative Aptitude ( CCS) Mixture and Alligation
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    A container contains 64 litres of pure milk. One-fourth of the milk is replaced by water. Again the operation is performed, and one-fourth of mixture is replaced by water. Find the final ratio of milk to water in the container.

    11 : 8

    Incorrect Answer

    10 : 7

    Incorrect Answer

    9 : 7

    Correct Answer

    10 : 9

    Incorrect Answer
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    Explanation:

    After 2 operations, final quantity of milk = 64 (1 – 1/4)2 = 36 litres
    So quantity of water is 64  – 36 = 28 
    So ratio is 36 : 28 = 9 : 7

    Hence, option 3 is the correct answer.

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