9.8 To improve package tracking at a UPS transfer facility, conveyor equipment was upgraded with RFID sensors at a cost of $345,000. The operating cost is expected to be $148,000 per year first 3 years and $210,000 for the next 3 years. The salvage value of the equipment is expected to be $140,000 for the first 3 years, but due to obsoles- cence, it won't have a significant value after that. At an interest rate of 10% per year, determine the economic service life and equivalent annual worth of the equipment. Use tabulated factors or a spreadsheet, as requested by your for the instructor