Engineering economics help

The following data represent the estimates for a new field equipment for a construction company. The management uses an interest rate of 8%. The market value of the old field equipment is now $85,000. Operating MaintenanceMarket value if cost in year Cost in Year sold at end of n n Year n 1 $10,000 $80,000 2 15,000 65,000 . 3 17,000 50,000 4 5 6 30,000 49,000 30,000 7 35,000 74,000 25,000 Data for new equipment is available. Its economic life is known and equals 9 years and its minimum Equivalent Uniform Annual Cost (EUAC) is $65,000 per year. Conduct replacement analysis to examine when the existing field equipment should be replaced with the new one. Clearly organize and show your calculation steps