Swift Oil Company is considering investing in a new oil well. It is expected that the oil well will increase annual revenues by $130,000 and will increase annual expenses by $70,000 including depreciation. The oil well will cost $490,000 and will have a $10,000 salvage value at the end of its 10-year useful life Calculate the annual rate of return. (Round answer to decimal places, eg. 13%) Annual rate of return %