Final answer:
To find the original price of a dress bought at a 20% discount for $57.60, divide $57.60 by 0.8 (representing the 80% paid). The original price was $72.00.
Step-by-step explanation:
If a dress was purchased at a 20% discount for $57.60, we can find the original price by using the following method:
- First, understand that a 20% discount means the dress was bought for 80% of its original price (100% - 20% = 80%).
- Since $57.60 represents 80% of the original price, we can set up an equation to find 100% of the original price. If 80% is $57.60, 1% would be $57.60 divided by 80.
- Divide $57.60 by 80% (or 0.8) to find the full price before the discount.
- $57.60 / 0.8 = $72.00.
Therefore, the original price of the dress was $72.00.