A mixture contains milk and water in the ratio 5:2. If 14 liters of water are added to the mixture, the ratio of milk to water becomes 5:4. What is the initial quantity of milk in the mixture?

✓ Correct Answer: Option C

Let initial milk be 5x and water be 2x. New ratio: 5x / (2x + 14) = 5/4. Cross-multiplying gives 20x = 10x + 70, so 10x = 70, and x = 7. Initial milk is 5x = 5 * 7 = 35 liters.