When a car's tire pressure is 30 pounds per square inch (psi), it averages 20.6 mpg of gasoline. If the tire pressure is increased to 35 psi, the car averages 21.3 mpg of gasoline. Answer parts a) through c). a) If someone drives an average of 23,000 mi per year, how many gallons of gasoline will he save in a year by increasing his tire pressure from 30 to 35 psi? O gal (Type an integer or decimal rounded to the nearest hundredth as needed.) b) If gasoline costs $3.00 per gallon, how much will he save in a year? (Round to the nearest cent as needed.) c) Assume that there are about 160 million cars in a country and that these changes are typical of each car, how many gallons of gasoline would be saved if all drivers increased their cars' tire pressure? O gal (Round to the nearest gallon as needed.)
When a car's tire pressure is 30 pounds per square inch (psi), it averages 20.6 mpg of gasoline. If the tire pressure is increased to 35 psi, the car averages 21.3 mpg of gasoline. Answer parts a) through c). a) If someone drives an average of 23,000 mi per year, how many gallons of gasoline will he save in a year by increasing his tire pressure from 30 to 35 psi? O gal (Type an integer or decimal rounded to the nearest hundredth as needed.) b) If gasoline costs $3.00 per gallon, how much will he save in a year? (Round to the nearest cent as needed.) c) Assume that there are about 160 million cars in a country and that these changes are typical of each car, how many gallons of gasoline would be saved if all drivers increased their cars' tire pressure? O gal (Round to the nearest gallon as needed.)
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:When a car's tire pressure is 30 pounds per square inch (psi), it averages 20.6 mpg of gasoline. If the tire pressure is increased to 35 psi, the car averages 21.3 mpg of
gasoline. Answer parts a) through c).
a) If someone drives an average of 23,000 mi per year, how many gallons of gasoline will he save in a year by increasing his tire pressure from 30 to 35 psi?
O gal
(Type an integer or decimal rounded to the nearest hundredth as needed.)
b) If gasoline costs $3.00 per gallon, how much will he save in a year?
(Round to the nearest cent as needed.)
c) Assume that there are about 160 million cars in a country and that these changes are typical of each car, how many gallons of gasoline would be saved if all drivers
increased their cars' tire pressure?
Ogal
(Round to the nearest gallon as needed.)
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