Chapter 4 - Proportions, Percents, and Solving Inequalities - 4.3 - More on Percents and Problem Solving - Problem Set 4.3 - Page 161: 32

They should be considering a 2240 square foot house.

Because the house they are looking for will be 30% smaller than the one they own now, the new house will be 100% - 30% = 70% the size of the current house. The current house is 3200 square feet, so the new one will be: 3200 $\times$ 70% = 3200 $\times$ 0.7= 2240 They should be considering a 2240 square foot house.