Answer:
1) annual savings in cash operating costs = $112,000
Present cost of transient workers $230,000
Cost of an operator and assistant ($93,000)
Fuel ($10,000)
Maintenance contract ($13,000)
Insurance ($2,000)
Annual savings in cash operating costs $112,000
2) a. simple rate of return = $112,000 / $670,000 = 16.72%
b. I used an excel spreadsheet to calculate the NPV with CF1 - CF9 = $112,000, and CF10 = $227,000 (includes salvage value), and a discount rate of 11%. NPV = $30,095. Since the NPV is positive, then the cherry picker should be purchased.
3) payback period = $670,000 / $112,000 = 5.98 years
4) using an excel spreadsheet the IRR = 11.99%