10g of salt is present in 50g of solution. Calculate the mass percentage of the solution.

Options

A. 20%
B. 30%
C. 40%
D. 50%

Explanation

To calculate the mass percentage of salt in the solution, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Mass of Solute and Mass of Solution**:
- The mass of the solute (salt) is given as 10 grams.
- The mass of the solution is given as 50 grams.

2. **Use the Mass Percentage Formula**:
- The formula for mass percentage is:
\[ \text{Mass Percentage} = \left( \frac{\text{Mass of Solute}}{\text{Mass of Solution}} \right) \times 100 \]

3. **Substitute the Values into the Formula**:
- Substitute the mass of solute and mass of solution into the formula:
\[ \text{Mass Percentage} = \left( \frac{10 \, \text{g}}{50 \, \text{g}} \right) \times 100 \]

4. **Calculate the Fraction**:
- Calculate the fraction:
\[ \frac{10}{50} = 0.2 \]

5. **Multiply by 100 to Get the Percentage**:
- Now multiply by 100 to convert the fraction to a percentage:
\[ 0.2 \times 100 = 20\% \]

6. **Conclusion**:
- The mass percentage of salt in the solution is 20%.

### Final Answer:
The mass percentage of the solution is **20%**.