At the beginning of a trip, the mileage odometer read 56,200 miles. The driver filled the gas tank wtth 6 gallons of gasoline. During the trip, the driver filled his tank again with 12 gallons of gasoline when the odometer read 56,560 . At the end of the trip, the driver filled the tank agaln with 20 gallons of gasoline. The odometer read 57,060. To the nearest tenth, what was the car’s average miles-per-gallon for the entire trip?
Answer Choices
A. 22.5
B. 22.6
C. 24.0
D. 26.9
E. 27.5