Blossom 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 $171,000, has an estimated useful life of 7 years and a salvage value of zero, and will increase net annual cash flows by $33.980. Click here to view the factor table. What is its approximate internal rate of return? (Round answer to 0 decimal ploce, eg. 13\%.) Internal rate of return %