Current Attempt in Progress Your answer is incorrect. Swift Oil Company is considering investing in a new oil well. It is expected that the oil well will increase annual revenues by $120,215 and will increase annual expenses by $65,000 including depreciation. The oil well will cost $400,000 and will have a $9,000 salvage value at the end of its 10-year useful life. Calculate the annual rate of return. (Round answer to 0 decimal places, e.g. 13\%.) Annual rate of return %