A company is considering replacing its injection modeling machine RX-2500 for the later model RX-6000. RX-2500 cost $200,000 ten years ago, and its salvage at end of year zero is $50,000, which decreases by $5,000 per year. Operation and maintenance costs are $15,000 in year 1 and increase by 20% annually. The company’s MARR is 6.5%. The EUAC of the RX-6000 is $45,000. Should the company replace the machine, and when?