Question

If a 10 lit mixture contains milk and water in the ratio 2:1 then, how much more mixture should be added to change the ratio to 1:2?

Answer 1

If you add the same mixture again,the ratio will still remain the same.

The question should be how much water to be added

In 10 litres, let quantity of milk = 2x and quantity of water = x

=> 2x + x = 10

=> x = 10/3 , 2x = 20/3

Let y litres of water be added to make the ratio 1:2

=> (20/3) / (10/3 + y) = 1 / 2

=> 40/3 = 10/3 + y

=> y = 10 liters

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