Kenton compared gas mileage for three cars.

Car A—340 miles for 17 gallons
Car B—361 miles for 19 gallons
Car C—450 miles for 18 gallons

Which car has the best rate of miles per gallon?
Car A has the best rate at 20 miles per gallon.
Car B has the best rate at 19 miles per gallon.
Car C has the best rate at 25 miles per gallon.
All three cars had the same rate of miles per gallon.

Car C has the best rate at 25 miles per gallon.

To determine which car has the best rate of miles per gallon, we can calculate the miles per gallon for each car.

Car A: 340 miles / 17 gallons = 20 miles per gallon
Car B: 361 miles / 19 gallons = 19 miles per gallon
Car C: 450 miles / 18 gallons = 25 miles per gallon

Based on the calculations, Car C has the best rate of miles per gallon at 25 miles per gallon.