Problem 9-17 Comparing Investment Criteria [LO1, 2, 3, 5, 7] Consider the following two mutually exclusive projects: Whichever project you choose, if any, you require a return of 15 percent on your investment. a-1 What is the payback period for each project? (Do not round intermediat calculations and round your answers to 2 decimal places, e.g., 32.16. Problem 9-17 Comparing Investment Criteria [LO1, 2, 3, 5, 7] Consider the following two mutually exclusive projects: Whichever project you choose, if any, you require a return of 15 percent on your investment. a-1 What is the payback period for each project? (Do not round intermediat calculations and round your answers to 2 decimal places, e.g., 32.16