Question

Deshaun's car used 4 gallons of gas on a 90-mile trip. If it gets the same mileage, how much gas will it use on a 225-mile trip?

a) 9 gallons
b) 10 gallons
c) 11 gallons
d) 12 gallons

Answer 1

Deshaun's car used 4 gallons of gas for a 90-mile trip. By calculating the car's fuel efficiency, we determine that the car would use 10 gallons of gas for a 225-mile trip, corresponding to option (b).

Step-by-step explanation:

Deshaun's car used 4 gallons of gas on a 90-mile trip. To find how much gas the car will use on a 225-mile trip, we set up a proportion since the car gets the same mileage:

1. Calculate the car's fuel efficiency: 90 miles / 4 gallons = 22.5 miles per gallon.
2. Use the fuel efficiency to find the gas needed for 225 miles: 225 miles / 22.5 miles per gallon = 10 gallons.

So, for a 225-mile trip, Deshaun's car will use 10 gallons of gas, which corresponds to option (b).