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Helen is looking into purchasing a building for her new business. The building would cost $372,000 and have a life of 20 years. The building would have a salvage value of $52,000. She is estimating that the net operating cash flows will be $31,000. Determine the internal rate of retum (IRR) and simple payback period of the building if the business will be subject to a 21% tax rate. (Round IRR answer to 2 decimal places, e.8. 52.75%.) Internal Rate of Return % Simple Payback years