Pique Corporation wants to purchase a new machine for $300,000. Management predicts that the machine can produce sales of $200,000 each year for the next 5 years. Expenses are expected to include direct materials, direct labor, and factory overhead (excluding depreciation) totaling $80,000 per year. The firm uses straight-line depreciation with no residual value for all depreciable assets. Pique's combined income tax rate is 40%. Management requires a minimum after-tax rate of return of 10% on all investments. Rounded to the nearest whole percentage (e.g., 31.349% = 31%), what is the annual accounting (book) rate of return (ARR) based on the initial investment?