Your company is looking at purchasing a dump truck at a cost of $65,000. The truck would have a useful life of   five years. At the end of the fifth year the salvage value is estimated to be $10,000. The dump truck could be billed out at $68.00 per hour and costs $13.00 per hour to operate. The operator costs $35.00 per hour. Using 1,000 billable hours per year,  determine the NPV for the purchase of the dump truck using a MARR of 18%.