Question 480805
when mileage reads 34,000, she fills the tank with 8 gallons.
when mileage reads 34,240, she fills the tank with 12 gallons.
when mileage reads 34,576, she fills the tank with 16 gallons.
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when mileage reads 34,000, she fills the tank with 8 gallons.
the 8 gallons is not counted for consumption during the trip because this is when the trip starts.
all she is doing is filling the tank to start the trip.
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when mileage reads 34,240, she fills the tank with 12 gallons.
gas mileage for this leg of the trip is 240/12 = 20 miles per gallon.
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when mileage reads 34,576, she fills the tank with 16 gallons.
gas mileage for this leg of the trip is 336/16 = 21 miles per gallon.
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she drove a total of 240 + 336 = 576 miles for the trip.
she consumed a total of 12 + 16 = 28 gallons.
gas mileage for the entire trip was 576/28 = 20.57142857 miles per gallon.