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Discussion :: Ratio and Proportion

  1. In a mixture 60 litres, the ratio of milk and water 2 : 1. If this ratio is to be 1 : 2, then the quantity of water to be further added is:

  2. A.

    20 litres

    B.

    30 litres

    C.
    40 litres
    D.

    60 litres

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    Answer : Option D

    Explanation :

    Quantity of milk = [ 60 x \(\frac { 2 } {3}\)]litres = 40 litres.

     

    Quantity of water in it = (60- 40) litres = 20 litres.

     

    New ratio = 1 : 2

     

    Let quantity of water to be added further be x litres

     

    Then, milk : water =[\(\frac { 40} { 20+X }] \)

     

    Now,[\(\frac { 40} { 20+X }] \)\(\frac { 1 } { 2 } \)

     

     20 + x = 80

     

     x = 60.

     

     Quantity of water to be added = 60 litres.

     


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