The mansfield company is considering investing in a wind turbine to generate its own power. any unused power will be sold back to the local utility company. between cost savings and new revenues, the company expects to generate $ 864 comma 000 per year in net cash inflows from the turbine. the turbine would cost $ 4.8 million and is expected to have a 20-year useful life with no residual value. calculate the accounting rate of return (arr).