Mathematics and Society - OS X Lion Server

i/' /CE' I~ 0~,~.~ ~'~ f.M .. cOmH~~~~ ~ffYou know that it is more efficient on a trip for a car to have 4 people in it thanjust 1. That way you get more people moved many miles for about the same amount ofgasoline. When two people go 10 miles each, you can say that they have traveled 20people-miles. The number of people-miles per gallon gives one way to compare differentkinds of vehicles.Average number of People in People-milesVehicle miles per gallon vehicle per gallonCar 13.3 1 13.31.3* 17.32 26.65 66.5Bus 5.9 5 29.550 295.0Jet aircraft 0.24 73 17.5Electric train a 1.88 600 1130 (levelground)*Estimated averageaElectricity used is expressed in terms of fuel.1) According to the table, what type of vehicle gives the most people-miles pergallon? The least? _2) Since jets do not give a very highgoing on long trips like to fly?3) Since cars have a low people-milescould take a bus drive instead?people-miles per gallon figure, why do peopleper gallon figure, why do so many people who4) What does the 1. 3 in the "people in vehicle" column mean?5) How was the last column figured out?6) Some cars get 35 miles per gallon. With 2 people, what would the people-miles pergallon be for such a car?7) Suppose a jet had 150 people (including the crew) in it and got the same number ofmiles per gallon as in the table. How many people-miles per gallon would thatgive? Would this be more efficient than 3buses? _8) Besides fuel efficiency, why would one bus with 50 p~ople be better than 10 cars,each with 5 people?_DATA UPDATED FROM: Principles of Environmental Science, by Kenneth Watt,Copyright © 1973 by McGraw·Hili Book CompanyUsed with permission of McGraw~HiIl Book Company 245