A 40 litre mixture contains milk and water in the ratio 3 : 1. If 5 litres of milk and 5 litres of water are added, what is the new ratio of milk to water?
Correct answer D. 7:3
Explanation
Milk = 30 and water = 10 litres. After adding, milk = 35 and water = 15, so the ratio is 35 : 15 = 7 : 3.
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