In Class Group Exercise 6.4: Suppose that the total investment cost is estimated to be $100,000 for a particular robot project. The total operating costs( labor, maintenance, and other annual expenses) are expected to be $20,000 per year, and the anticipated revenues from the robot installation are $65,000 annually. It is expected that the robot will have a service life of five years. Determine the payback period and ROI that expected of the investment.