### Home > PC3 > Chapter 11 > Lesson 11.2.3 > Problem 11-121

11-121.

When driving at

If gas costs

, how much does it cost per hour to run the air conditioner? cost of running AC = cost of running car with AC – cost of running car without AC

If a car drives at a rate of

mi/h, it gets*m*mi/gal with the air conditioning off andmi/gal with the air conditioning on. If gas costsper gallon, how much does it cost per hour to run the air conditioner?