Amy paid $87.27 for a pair of running shoes during a 15%-off sale. What was the regular price?

.85x = 87.27

Solve for x.

To find the regular price of the running shoes, you need to use the information given - the sale price and the discount percentage. Here's how you can calculate it:

1. Start by considering the sale price. Amy paid $87.27 for the shoes during the 15%-off sale.

2. Let's assume that the regular price of the shoes is represented by "x."

3. To calculate the discount amount, multiply the regular price by the discount percentage. In this case, 15% is equivalent to 0.15 as a decimal. So the discount amount can be found by multiplying 0.15 by "x," which gives 0.15x.

4. The sale price is equal to the regular price minus the discount amount. So you can write the equation as follows: x - 0.15x = $87.27.

5. Simplify the equation: 0.85x = $87.27.

6. Solve for "x" by dividing both sides of the equation by 0.85: x = $87.27 / 0.85.

7. Calculating x gives: x ≈ $102.73.

Therefore, the regular price of the running shoes is approximately $102.73.