Andreescu's Tennis Camp Inc. just purchased $172,500 of new equipment. The equipment is expected to increase the net income of the firm by $15,000, $35,000, $25,000, and $10,000 a year in each of the next four years. Andreescu's uses straight-line depreciation over the projected life of each project. What is the average accounting rate of return on this equipment? 12.32% 5.9% 18.37% 24.64% 49.28%