Q.

729 ml of a mixture contains milk and water in the ratio 7 : 2. How much more water is to be added to get a new mixture containing milk and water in the ratio 7: 3?

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a

52 ml

b

81 ml

c

71 ml

d

60 ml

answer is D.

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Detailed Solution

Quantity of milk =79×729=567ml

Quantity of water =29×729=162ml

Let 'x' be the quantity that should be added to make the ratio 7:3

According the question

567162+x=731701=1134+7x7x=17011134x=81ml

 

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