Question: please show full steps and conversions 7. To reduce the drag coefficient and thus to improve the fuel efficiency, the frontal area of a car

please show full steps and conversions

7. To reduce the drag coefficient and thus to improve the fuel efficiency, the frontal area of a car is to be reduced. Determine the amount of fuel and money saved per year as a result of reducing the frontal area from 17 to 14 112. Assume the car is driven 10,000 mi a year at an average speed of 55 mi/h. Take the density and price of gasoline to be 50 lb/ft3 and $3.10/gal, respectively, the density of air to be 0.075 lb/ft3: the heating value of gasoline to be 20,000 Btu/ibm; and the overall efficiency of the engine to be 30% (M06.71

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