Assume that there are 100 million passenger cars in the
Chapter 1, Problem 1.3.59(choose chapter or problem)
Assume that there are 100 million passenger cars in the United States and that the average fuel consumption is 20 mi/gal of gasoline. If the average distance traveled by each car is 10 000 mi/yr, how much gasoline would be saved per year if average fuel consumption could be increased to 25 mi/gal?
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