Chapter 4 - Proportions, Percents, and Solving Inequalities - 4.3 - More on Percents and Problem Solving - Problem Set 4.3 - Page 161: 34

The original price of the dress was 175 dollars.

Let s represent the original price. We can use the following guideline to solve this problem. Original selling price - Discount = Discount sale price s - 20% $\times$ s = 140 s - 0.2s = 140 0.8s = 140 Divide both sides by 0.8: s = 175 The original price of the dress was 175 dollars.