1. Consider the following two mutually exclusive projects ( X and Y ). Whichever project you choose, if any, you require a 10 percent return on your investment. a. Calculate the payback period for each project. (6 marks) b. Calculate the net present value (NPV) of each project ( 6 marks) c. Based on your answers in (a), (b) as well as the given IRR, which project will you finally choose? Explain