Final answer:
To find out how many gallons a truck would need to travel an additional 250 miles, you calculate the truck's fuel economy (17 miles per gallon) and then divide the additional miles by this figure, which results in 14.7 gallons needed.
Step-by-step explanation:
The student is asking how many gallons of gasoline a truck would need to travel an additional 250 miles, given that it used 6.3 gallons to travel 107 miles. To find the additional gallons needed, we must first determine the truck's fuel economy, which is the number of miles the truck can travel per gallon of gasoline. This is done by dividing the number of miles traveled by the gallons used:
- Calculate the fuel economy: 107 miles / 6.3 gallons = 17 miles per gallon.
- Next, calculate the number of gallons needed for the additional 250 miles: 250 miles ÷ 17 miles per gallon = 14.7 gallons.
Therefore, the truck would need 14.7 gallons of gasoline to travel an additional 250 miles.