A contractor has purchased a wheel loader for $130,000 and expects to use the loader an average of 1,500 hours per year. Tires cost $6,000 to replace (estimated at after every 4,500 hours of use), and major repairs will be needed every 6,000 hours at a cost of $5,000. The contractor expects to be able to sell the charger for $10,000 after it has been used for 15,000 hours of operation. Fuel, oil, and minor maintenance costs about $19.75 for every hour the charger is used. Interest, insurance and taxes add up to around 16%. 
How much must the contractor charge per hour for the use of the charger to recover his costs?