21 July, 07:07
Dori filled her car with 26.5 gallons at the start of her trip. Upon arrival she
recorded her odometer mileage of 43,156 miles, but she realized she had
forgotten to get her beginning mileage. Knowing that her car gets an average
of 25 mpg, what is the best estimate of her beginning mileage?
21 July, 07:36
21 July, 08:23
4.2 * 10⁴ mi
Average speed: 25 miles per gallon
Fuel: 26.5 gallons
The distance (d) traveled with this amount of fuel is:
26.5 gal * 25 mi/gal = 6.6 * 10² mi
The distance traveled is equal to the difference between the final reading of the odometer and the initial one.
d = final reading - initial reading
initial reading = final reading - d = 43,156 mi - 6.6 * 10² mi = 4.2 * 10⁴ mi
We can estimate that the initial reading of the odometer was around 4.2 * 10⁴ mi.
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» Dori filled her car with 26.5 gallons at the start of her trip. Upon arrival she recorded her odometer mileage of 43,156 miles, but she realized she had forgotten to get her beginning mileage.