A local graphic design company had purchased a large-scale printer 10 years ago for $180,000. The operations manager conducted a replacement study last year and she found that the current printer could be used for 4 more years before it is replaced. After two years, the owner of the company requested to repeat the replacement study for the printer. The current value for the printer is $22,000 but in order to keep it in service, a sensor should be replaced at a cost of $52,000 to be used for two more years. It is found that the current printer has an annual maintenance & operating cost of $18,000. The other option for the company is to purchase a new large-scale printer with a total AW cost of $70,000 per year over 7 years the Economic Life Service. Determine when the printer should be replaced using an interest rate of 10%.