A large electronics manufacturing firm is considering a new production line to replace an old existing line. The firm has already sold bonds to raise money for the project. The company plans to repay the bondholders $80,000 each year for 5 years and then redeem the bonds in year 5 for $1.3 million. The new production line is expected to last 10 years. Also, the new line is projected to have a first-year annual operating budget of $120,000 with a steady increase in cost each year of $30,000. The new line is expected to have a salvage value in year 10 of $130,000. The company's MARR is 15% per year. The old production line has a life expectancy of 3 more years with the following cost projection: Year Annual Operating Cost Salvage Value $480,000 $140,000 $120,000 $145,000 $100,000 $150,000 $90,000 NPO 3 Using "One More Year" replacement analysis, decide how many more years the company should keep the old line before replacing it with the new one