Petra bought gasoline when the odometer read 15,345.4. After the next filling, the odometer read 15665.6. It took 13.4 gal to fill the tank.
a) How many miles did she drive?
b) How many miles per gallon (mpg) did the car get?
Try this yourself. We will kindly critique your work.
http://www.jiskha.com/display.cgi?id=1258317681
To find the answers to these questions, we need to calculate the difference in mileage and divide it by the amount of gasoline used.
a) To calculate the number of miles she drove, we subtract the initial odometer reading from the final odometer reading.
Final odometer reading - Initial odometer reading = Miles driven
15665.6 - 15345.4 = 320.2 miles
Therefore, Petra drove a total of 320.2 miles.
b) To calculate the miles per gallon (mpg) the car got, we divide the number of miles driven by the amount of gasoline used.
Miles driven / Gallons of gasoline used = Miles per gallon (mpg)
320.2 miles / 13.4 gal = 23.88 mpg (rounded to two decimal places)
Therefore, the car got approximately 23.88 miles per gallon (mpg).