Question

In 40 L mixture of milk and water, the ratio of milk to water is 7:1. In order to make the ratio of milk and water 3:1, the quantity of water (in liters) that should be added to the mixture will be:

Answer 1

7x:1x. 40

so, 7x+1x=40

8x=40
×=5

ratio is 35:5


3:1. 40
3x:1x=40
4x=40
x=10

so required ratio is 30:10

35:5 to 30:10

to make 5 to 10 we need to add 5 litres of water in the mixture
so,

ans.=5 litres

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