Final answer:
After applying a 40% discount to the original $25 price of jeans, the discounted price before tax is $15.
Step-by-step explanation:
To calculate the price of the jeans after a 40% discount, you first determine the amount that will be discounted from the original price. A 40% discount on $25 can be calculated by converting the percentage to a decimal (40% = 0.40) and then multiplying it by the original price. The calculation would look like: $25 × 0.40 = $10. This is the discount amount.
Next, to find the sale price of the jeans before tax, subtract the discount amount from the original price: $25 - $10 = $15. Therefore, the price of the jeans after the discount and before sales tax is $15.