Please Manually only

11.31 Randall-Rico Consultants, 5 years ago, pur- chased for $45,000 a microwave signal graphi- cal plotter for corrosion detection in concrete structures. It is expected to have the market val- ues and annual operating costs shown for its re- maining useful life of up to 3 years. It could be traded now at an appraised market value of $8000 Market Value at End of Year, $ 6000 4000 1000 , $ per Year 50,000 53.000 60,000 Year A replacement plotter with new Internet-based, digital technology costs $125,000, has an esti- mated salvage value of 8% of the purchase price after its 5-year life, and an AOC of 20% of its pur- chase price. At an interest rate of 15% per year, determinehow many more vearsRandall-Rico should retain the present plotter. (Problem 11.4.5 continues the analysis using a spreadsheet.)