Mathematics · Mixtures and Quantitative Relations

Analyze the two quantities given below and establish the correct relationship: Quantity I: A vessel holds 84 litres of a mixture of water and milk in the ratio 3:4. After adding a certain amount of water to this mixture, the new ratio of water to milk becomes 3:2. What is the total quantity of the final mixture? Quantity II: In a mixture, water is 20% of the total mixture of milk and water. After replacing x litres (which is one-third of the initial mixture) with water, the quantity of milk becomes 4 litres more than that of water. Find the value of 5x.