Problem 7-5 Average Accounting Return Your firm is considering purchasing a machine with the following annual, end-of-year, book investment accounts Year 2 Year 3 Purchase Date $67,000 Year 1 Gross investment Less: Accumulated depreciation Net investment Year 4 $67,000 $67,000 $67,000 $67,000 16,750 33,500 50,25067,000 $67,000 $50,250 $33,500 $16,750 The machine generates, on average, $5,300 per year in additional net income. What is the average accounting return for this machine? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) AAR 13.96 %