Patti's project has an IRR of 15 percent, first cost P, and annual savings A. She observed that the salvage value, S, at the end of the five-year life of the project was exactly a third of the purchase price and that the present worth of the project was exactly double the annual savings. What was Patti's MARR? Click the icon to view the table of compound interest factors for discrete compounding periods when i= 15%. Patti's MARR was percent (Round to one decimal place as needed.)