Find the cost price of an article which is sold for Rs. 220 at a loss of 12%.

Answer

To find the cost price of an article sold at a loss, we can use the following formula:

\[ \text{Cost Price (CP)} = \frac{100}{100 - \text{Loss Percentage}} \times \text{Selling Price (SP)} \]

### Step-by-Step Solution:

1. **Identify the given values**:
- Selling Price (SP) = Rs. 220
- Loss Percentage = 12%

2. **Substitute the values into the formula**:
\[ \text{CP} = \frac{100}{100 - 12} \times 220 \]

3. **Calculate the denominator**:
\[ 100 - 12 = 88 \]
So, we can rewrite the formula as:
\[ \text{CP} = \frac{100}{88} \times 220 \]

4. **Simplify the fraction**:
\[ \frac{100}{88} = \frac{25}{22} \]
Therefore, the formula now looks like:
\[ \text{CP} = \frac{25}{22} \times 220 \]

5. **Calculate the multiplication**:
\[ \text{CP} = 25 \times 10 = 250 \]

6. **Conclusion**:
The cost price of the article is Rs. 250.

### Final Answer:
The cost price of the article is Rs. 250.