You work for an outdoor play structure manufacturing company and are trying to decide between the following two projects: Project Playhouse (minor project) Fort (major poject) 0 - 30 -80 Year-End Cash Flows (s thousands) 1 20 39 52 - 15 IRR 10.4% 8.6% You can undertake only one project. If your cost of capital is 8%, use the incremental IRR rule to make the correct decision. The incremental IRR is %. (Round to two decimal places.)