`SP = ((100 - loss%)) /100 X CP`

Answer

To solve the problem using the formula for Selling Price (SP) when there is a loss, we will follow these steps:

### Step-by-Step Solution:

1. **Understand the Formula**:
The formula for Selling Price (SP) when there is a loss is given by:
\[ SP = \left( \frac{100 - \text{loss\%}}{100} \right) \times CP \]
where:
- SP = Selling Price
- loss% = Percentage of loss
- CP = Cost Price

2. **Identify the Values**:
Let's assume:
- Cost Price (CP) = 8 rupees
- Loss Percentage (loss%) = 2%

3. **Substitute the Values into the Formula**:
Now, we will substitute the values into the formula:
\[ SP = \left( \frac{100 - 2}{100} \right) \times 8 \]

4. **Calculate the Loss Percentage**:
First, calculate \(100 - 2\):
\[ 100 - 2 = 98 \]

5. **Calculate the Fraction**:
Now, calculate the fraction:
\[ \frac{98}{100} = 0.98 \]

6. **Multiply by the Cost Price**:
Now, multiply this fraction by the Cost Price (CP):
\[ SP = 0.98 \times 8 \]

7. **Final Calculation**:
Now, calculate \(0.98 \times 8\):
\[ SP = 7.84 \]

### Conclusion:
The Selling Price (SP) at which the product should be sold to incur a 2% loss on a Cost Price of 8 rupees is **7.84 rupees**.

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