A track dozer cost $$235,000$ to purchase. Fuel, oil, grease, and minor maintenance are

estimated to cost $$42\mathrm{.}00$ per operating hour. A major engine repair costing $$28,000$ will

probably be required after $9,000$ hours of use. The expected resale price $($salvage value$)$ is $25\%$

of the original purchase price. The machine is expected to have a useful life of $12,000$ hours.

How much should the owner of the machine charge per hour of use, if it is expected that the

machine will operate $1,500$ hours per year? The company's cost of capital rate is $7\mathrm{.}35\%.$