6 liters of milk and water mixture has 75% milk in it. How much milk should be added to the mixture to make it 90% pure?
Correct Answer: 9 liters
Explanation:
The given solution has 75% milk.
Milk to be added has 100% milk.
Milk should be added to the given mixture in the ratio 15 : 10 or 3 : 2
∴ Quantity of milk to be added = (3 / 2) × 6 = 9 liters.
