Oil costs $1.24 per gallon ans is rated at 130,00Btu per gallon.The boiler effiis assumed at 75 percent. The steam required is 20 pounds per hour per ton of refrigeration produced, and the heat required to evaporate water is 950 Btu per pound. Assume the electrical requirements to be 0.03kW per ton and the cost to be $0.06 per kWh. Compute the operating cost in dollars per ton per hour due to electricity usage.