At the beginning of a trip, the tank of Chloe's
car was filled with 12 gallons of gas. When she
travels constantly on the highway 60 miles per
hour, the car consumes 1 gallon of gas per 35
miles. If she traveled 5 hours and 15 minutes on
the highway with a constant speed of 60 miles
per hour, how many gallons of gas are left in the
tank?
