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Question

140 litres of mixture contains water and milk in the ratio 3:7 respectively. If 40 litres of the mixture is replaced by same quantity of water, then find the ratio of water and milk in the final mixture.

A 3:1 Correct Answer Incorrect Answer
B 2:3 Correct Answer Incorrect Answer
C 3:2 Correct Answer Incorrect Answer
D 1:1 Correct Answer Incorrect Answer
E 4:1 Correct Answer Incorrect Answer

Solution

Remaining quantity of the original mixture = 140 – 40 = 100 litres Quantity of water in the final mixture = 100 x (3/10) + 40 = 70 litres Quantity of milk in the final mixture = 100 x (7/10) = 70 litres Ratio of water and milk in the final mixture = 70 : 70 = 1:1

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