Engineering Economics Provide answers to the following questions. Discrete compounding of interest and end-of- period cash flows should be assumed. All MARRs are "per year. Use tables to determine the required values 1. Evaluate machine XYZ on the basis of the Present Worth of Costs (PWC) method when the MARR is 12% per year. Pertinent cost data are is shown below. (15 Points) $13,000 15 years Investment cost Useful life Market value end of 15h year$3,000 Annual operating expenses Overhaul cost- end of 5th year $200 Overhaul cost- end of 10th year $550 $100