Answer: The car will travel 480 miles when the tank has 12 gallons.
Step-by-step explanation:
We are given that the car is moving with a speed of 40 miles/gallon.
We need to find the distance traveled by the car when the tank is filled with 12 gallons, we use unitary method.
In 1 gallon, the car is travelling 40 miles.
So, in 12 gallons, the car will travel
miles
Hence, the car will travel 480 miles when the tank has 12 gallons.