Answer:
a) 2.5 gallons
b) 1.75 hours
c) $3.24/passenger
d) 73.33 feet/second
e) 11.11 cents/mile
Step-by-step explanation:
a) Gallons - amount of gas used:
[tex]A = \frac{1\ gallon}{35\ miles}*87.5\ miles\\ A=2.5\ gallons[/tex]
b) hours - time spent on the trip
[tex]B = \frac{1\ hour}{50\ miles}*87.5\ miles\\ B=1.75\ hours[/tex]
c) dollars/passenger - amount spent per passenger on gas
[tex]C =\frac{\$3.89}{gallon}*2.5\ gallon*\frac{1}{3\ passengers} \\ C=\$3.24\ /passenger[/tex]
d) feet/second - average speed of the trip
[tex]D=\frac{50\ miles}{hour}*\frac{hour}{3,600\ seconds}*\frac{5,280\ feet}{mile}\\ D=73.33\ feet/ second[/tex]
e) cents/mile - money, in cents, spent per mile traveled
[tex]E =\frac{\$3.89}{gallon}*\frac{100\ cents}{\$} *2.5\ gallon*\frac{1}{87.5\ miles} \\ E=11.11\ cents /mile[/tex]
