Answer:
25%
Step-by-step explanation:
depreciation expense per year = ($110,000 - $10,000) / 10 = $10,000
average annual investment = $60,000 (carrying value after the end of year 5 or half the life of the project)
average net profit per year = $15,000
accounting rate of return = average net profit per year / average investment = $15,000 / $60,000 = 0.25 = 25%