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6 litres of milk and water mixture has 75% milk in it. How much milk should be added to the mixture to
make it 90% pure ?
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- 10 litres
- 8 litres
- 9 litres
- 12 litres
Correct Option: C
The given solution has 75 % milk .
Milk to be added has 100% milk .
By Alligation Rule 
Ratio = 10 : 15 = 2 : 3
∴ Milk should be added to the given mixture in the ratio 3 : 2 .
| ∴ Quantity of milk to be added = | " 6 ; 9 litres | |
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