Chapter 4 - Proportions, Percents, and Solving Inequalities - 4.3 - More on Percents and Problem Solving - Problem Set 4.3 - Page 161: 28

There will be 70 stores in the Orlando area after the increase.

We can use the following guideline to solve this problem. Current number of stores + Increase in the number of stores = Number of stores after the increase So, 50 + 40% $\times$ 50 = Number of stores after the increase 50 + .4 $\times$ 50 = Number of stores after the increase 50 + 20 = Number of stores after the increase 70 = Number of stores after the increase There will be 70 stores in the Orlando area after the increase.