To find the percentage discount being offered, we first need to determine the amount of the discount.
The normal price of the item is $19.95, and the sale price is $17.85.
- Calculate the discount amount:
\[ \text{Discount} = \text{Normal Price} - \text{Sale Price} = 19.95 - 17.85 = 2.10 \]
- Next, calculate the percentage discount based on the normal price. The formula for calculating percentage discount is:
\[ \text{Percentage Discount} = \left( \frac{\text{Discount}}{\text{Normal Price}} \right) \times 100 \]
Substituting the values we have:
\[ \text{Percentage Discount} = \left( \frac{2.10}{19.95} \right) \times 100 \]
- Calculate the value:
\[ \frac{2.10}{19.95} \approx 0.1053 \]
Now multiplying by 100 to get the percentage:
\[ 0.1053 \times 100 \approx 10.53% \]
Thus, the seller is offering you approximately a 10.53% discount.