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Crane 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 $161,000, has an estimated useful life of 7 years and a salvage value of zero, and will increase net annual cash flows by $31,990. Click here to view the factor table What is its approximate internal rate of return? (Round answer to 0 decimal place, 4.13% ) Internal rate of return