Saritha added 0.5 liter of water to 2 litres of pure milk. Find the percentage of pure milk in the solution.

Explanation

To find the percentage of pure milk in the solution after Saritha added 0.5 liters of water to 2 liters of pure milk, we can follow these steps:

### Step-by-Step Solution:

1. **Determine the amount of pure milk and water:**
- Pure milk = 2 liters
- Water = 0.5 liters

2. **Calculate the total volume of the solution:**
- Total volume = Volume of milk + Volume of water
- Total volume = 2 liters + 0.5 liters = 2.5 liters

3. **Use the formula to find the percentage of pure milk:**
- The formula for percentage is:
\[ \text{Percentage of pure milk} = \left( \frac{\text{Volume of pure milk}}{\text{Total volume of solution}} \right) \times 100 \]

4. **Substitute the values into the formula:**
- Volume of pure milk = 2 liters
- Total volume of solution = 2.5 liters
\[ \text{Percentage of pure milk} = \left( \frac{2}{2.5} \right) \times 100 \]

5. **Calculate the fraction:**
- \(\frac{2}{2.5} = 0.8\)

6. **Convert the fraction to a percentage:**
- \(0.8 \times 100 = 80\%\)

7. **Conclusion:**
- Therefore, the percentage of pure milk in the solution is **80%**.