Question : One litre of milk costs INR 40. Water is mixed with milk and the mixture cost becomes INR 30 per litre. Find the ratio of water and milk in the mixture.
Option 1: 2 : 5
Option 2: 1 : 3
Option 3: 1 : 2
Option 4: 2 : 3
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Correct Answer: 1 : 3
Solution :
Given: That one litre of milk costs INR 40.
Water is mixed with milk and the mixture cost becomes INR 30 per litre.
The ratio of water and milk in the mixture = 10 : 30 = 1 : 3
Hence, the correct answer is 1 : 3.
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