Final answer:
The accounting rate of return (ARR) for the machine is calculated to be 41.22%. However, none of the provided options a-d match this calculation, suggesting there's an error with the options given. ARR measures the profitability of an investment in percentage terms.
Step-by-step explanation:
To calculate the accounting rate of return (ARR) for the machine, we use the formula:
ARR = (Average Annual Profit / Initial Investment) x 100
First, we calculate the average annual profit (Net Income) after depreciation and taxes, which is given as $12,120. The initial investment is the cost of the machine, which is $29,400. Plugging these into the formula gives us:
ARR = ($12,120 / $29,400) x 100
ARR = 41.22%
The ARR is used to determine the profitability of an investment, and it is clear that none of the choices (6.00 years, b 4.85 years, c 2.43 years, d 173 years) represent a rate, so there seems to be an error in the provided options.
On the basis of the given data and standard ARR calculation, none of options a-d are correct, as they do not reflect a percentage rate of return. The computed ARR here is 41.22%.