(ignore income taxes in this problem.) the budget method that maintains a constant twelve-month planning horizon by adding a new month on the end as the current month is completed is called: wombles corporation is contemplating purchasing equipment that would increase sales revenues by $478,000 per year and cash operating expenses by $249,000 per year. the equipment would cost $738,000 and have a 9 year life with no salvage value. the annual depreciation would be $82,000. the simple rate of return on the investment is closest to: