Chapter 4 - Proportions, Percents, and Solving Inequalities - Chapter 4 Review Problem Set - Page 184: 50

The retailer should charge 44 dollars for the book.

Let s represent the selling price. The basic relationship is: selling price equals cost plus profit. Selling price = Cost + Profit Selling price = s Cost = 22 Profit = 50% of the selling price = 50% $\times$ s = 0.5s So, s = 22 + 0.5s 0.5s = 22 Divide both sides by 0.5 s = 44 The retailer should charge 44 dollars for the book.