## Elementary Algebra

Let s represent the selling price. We can use the following guideline to solve this problem: Selling price = Cost + Profit So: s = 2.5 + 50% $\times$ s s = 2.5 + 0.5 $\times$ s s = 2.5 + 0.5s 0.5s = 2.5 Divide both sides by 0.5: s = 5 The retailer should charge 5 dollars for the candy.