Living in the Environment 18th Edition by Tyler Miller,Scott Spoolman

Exercise 13

Under normal driving conditions an internal combustion engine in a car produces approximately 200 grams (0.2 kilograms, or 0.44 pounds) of CO 2 per kilometre driven. Assume that a city you are studying has 7 million cars and that each car is driven an average of 20,000 kilometers (12,400 miles) per year.
Calculate the carbon footprint per car, that is, the number of metric tons (and tons) of CO 2 produced by a typical car in 1 year. Calculate the total carbon footprint for all cars in the city, that is, the number of metric tons (and tons) of CO 2 produced by all the cars in 1 year. ( Note: 1 metric ton = 1,000 kilograms = 1.1 tons.)