Aubree's car used 4 gallons to travel 120 miles. How many miles can the car go on one gallon of gas?

To find out how many miles Aubree's car can go on one gallon of gas, we need to divide the number of miles it traveled (120 miles) by the number of gallons of gas it used (4 gallons).

The number of miles per gallon (MPG) is therefore:

120 miles / 4 gallons = 30 miles/gallon

So, Aubree's car can go 30 miles on one gallon of gas.