Question

792 ml of mixture contains milk and water in the ratio 7 is to to how much more water is to be added to get

Answer 1

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$\huge{\blue{Question:}}$

In a 729 litres mixture of milk and water, the ratio of milk to water is 7:2. to get a new mixture containing milk and water in the ratio 7:3, the amount of water to be added is:


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Quantity of milk in 729 litre of mixture
= 7*729/9 = 567 litre

Quantity of water
= 729-567 = 162 litre.

Let x litre of water be added to become ratio 7:3.

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7/3 = 567/(162+x)
162*7 +7x = 567*3
7x = 1701-1134 = 567
x = 567/7 = 81 litre water is to be added.


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