Question :
In a 729 litres mixture of milk and water, the ratio of milk to water is 7:2. to get a new mixture containing milk and water in the ratio 7:3, the amount of water to be added is:
1. 81 litres
2. 71 litres
3. 56 litres
4. 50 litres
Answer :
1 - 81 litres
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