Question
Estimate the number of gallons of gasoline consumed by the total of all automobile drivers in the United States, per year.
Step 1
Given that the population of the United States is approximately $3 \times 10^{8}$ people, and assuming that for every two people there is one automobile, we can estimate the number of automobiles as follows: \[ \frac{3 \times 10^{8} \text{ people}}{2 \text{ Show more…
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Estimate the number of gallons of gasoline consumed by the total of all automobile drivers in the U.S., per year. Suppose that there are about 3 Ă— 108 people in the United States, approximately half of the them have cars, each car drives an average of 12,000 mi per year, and consumes a gallon of gasoline for each 20 mi.
(II) Estimate the number of gallons of gasoline consumed by the total of all automobile drivers in the U.S., per year.
INTRODUCTION, MEASUREMENT, ESTIMATING
Order of Magnitude: Rapid Estimating
Estimate the annual consumption of gasoline by passenger cars in the United States.
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