Answer: B) 11 miles/gallon
This can be written as 11 miles per gallon and shortened to 11 mpg
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Explanation:
The odometer reads 143,986 miles when the gas tank is full.
Then it reads 144,261 miles when the gas tank is empty (when all the gas is used up).
This is a difference of 144,261-143,986 = 275 miles.
The truck's gas tank has a capacity of 25 gallons, so this means
(275 miles)/(25 gallons) = 11 miles/gallon = 11 miles per gallon
is the gas mileage of the truck.
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Put another way:
We know the truck traveled 275 miles on 25 gallons. We can form this ratio
275 miles : 25 gallons
Divide both parts by 25 to get the "25 gallons" to turn into "1 gallon"
275 miles : 25 gallons
275/25 miles : 25/25 gallons
11 miles : 1 gallon
Therefore, each gallon of gas will let the truck drive 11 miles. So the truck gets 11 mpg.
