Determine the incremental net present value for Problem 7. Which track hoe should your company choose? 
In Problem 7, your company needs to purchase a new track hoe and has narrowed the selection to two pieces of equipment. The first track hoe costs $100,000 and costs $32.00 per hour to operate. The second track hoe costs $110,000 and costs $27.00 per hour to operate. The operator costs $28.00 per hour. The revenue from either track hoe is $95.00 per hour. Using a useful life of four years, a salvage value equal to 20% of the purchase price, 1,200 billable hours per year, and a MARR of 20%, calculate the NPV for both track hoes. Which track hoe should your company choose?