Your firm is considering purchasing a machine with the following annual, end-of-year, book investment accounts. Gross investment Less: Accumulated depreciation Net investment Purchase Date $56,000 0 $56,000 Year 1 $56,000 14,000 $42,000 The machine generates, on average, $5,500 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 5.090 %