Multiple Choice Questions on 30 litre of a mixture contains milk and water in the ratio of 7 3 How much water should be added to ........... for CDS Exam Preparation

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Multiple Choice Questions

30 litre of a mixture contains milk and water in the ratio of 7 3 How much water should be added to ...........

Quantitative Aptitude (CDS) Ratio, Proportion
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    30 litre of a mixture contains milk and water in the ratio of 7:3. How much water should be added to the mixture such that the ratio of milk and water will get reversed 3:7?

    30 litres
     

    Incorrect Answer

    40 litres
     

    Correct Answer

    44 litres
     

    Incorrect Answer

    34 litres

    Incorrect Answer
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    Explanation:

    Reverse of 3:7 = 7 : 3 
    7/10×30 = 21
    milk = 21 litres and water = 9 litres
    21 / (9 + water) = 3/7
    147 = 27 + 3 water 
    3water = 120
    water =  40 litres

    By: bhavesh kumar singh
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