Suntand Company is evaluating the purchase of a rebuilt spot-welding machine to be used in the manufacture of a new product. The machine will cost $167,000, has an estimated useful life of 7 years and a salvage value of zero, and will increase net annual cash flows by $34,305. Click here to view the factor table What is its approximate internal rate of return? (Round answer to 0decimal ploce, es. 13\%) Internal rate of return