Question

Ellen recently purchased a new hybrid car and wants to check her gas mileage. At an odometer setting of 651.1 mi, she fills the tank. At 1314.4 mi, she requires 16.1 gal to re-fill the tank. Assuming that the tank is filled to the same level both times, how is the gas mileage best expressed?a) 40 mi/gal. b) 41 mi/gal.c) 41.2 mi/gal. d) 41.20 mi/gal.

Answer 1

To calculate the gas mileage, subtract the initial odometer reading from the final odometer reading to find the total distance driven, and then divide this distance by the number of gallons of gasoline used. In this case, the gas mileage is 41.20 mi/gal.

Step-by-step explanation:

To find the gas mileage, we need to calculate the number of miles driven per gallon of gasoline. We can do this by subtracting the initial odometer reading from the final odometer reading to find the total distance driven, and then dividing this distance by the number of gallons of gasoline used. In this case, the initial odometer reading is 651.1 mi, the final odometer reading is 1314.4 mi, and the number of gallons used is 16.1 gal.

Using this information, the gas mileage can be expressed as:

Gas mileage = Total distance driven / Gallons of gasoline used

Gas mileage = (1314.4 mi - 651.1 mi) / 16.1 gal = 663.3 mi / 16.1 gal = 41.20 mi/gal

Therefore, the gas mileage is best expressed as 41.20 mi/gal.

Answer 2

d) 41.20 mi/gal.

Step-by-step explanation:

Initial odometer reading, D1 = 651.1 mi

Final odometer reading, D2 = 1314.4 mi

Volume of gas used = 16.1 gal

Gas mileage = (D2 - D1)/V

= (1314.4 - 651.1)/16.1

= 41.2 mi/gal.