When one litre of water is added to a mixture of milk and water the new mixture contains 25 of milk ...........

Quantitative Aptitude ( CCS) Mixture and Alligation

When one litre of water is added to a mixture of milk and water, the new mixture contains 25% of milk. When one litre of milk is added to the new mixture, then the resulting mixture contains 40% milk. What is the percentage of milk in the original mixture?

100/6 %

50/6 %

100/3 %

50/3 %

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Explanation:

Original Mixture = x L
In (x + 1) Mixture, quantity of milk = (x + 1)* (25/100) = (x + 1)/4
one litre of milk is added to the new mixture
[((x + 1)/4 )+ 1 ]/ x + 2 = 40%
x = 3 ; quantity of milk = (3 + 1)/4 = 1L
percentage of milk in the original mixture = 1/3 * 100 = 100/3 %