A 60 L mixture has a milk-water ratio of 7:3. How much water to add to make…

To find the amount of water to add to the mixture to achieve a 1:1 ratio, we follow a systematic approach:

Step-by-Step Calculation
Analyze the Initial Mixture:

Total volume = 60 L.

Ratio of milk to water = 7:3.

Total parts in the ratio = 7 + 3 = 10 parts.

Each part = 60 L / 10 = 6 L.

Initial milk quantity = 7 * 6 L = 42 L.

Initial water quantity = 3 * 6 L = 18 L.

Determine the Goal:

The goal is a 1:1 ratio, meaning the amount of water must equal the amount of milk.

Since the milk volume remains 42 L, the final water volume must also be 42 L.

Calculate Water to Add:

Water to add = Final water needed - Initial water quantity.

Water to add = 42 L - 18 L = 24 L.

Correct Option
Option D: 24 L