Question

Which of the following is the most appropriate unit to describe the time you can drive a car based on the amount of gas?

Minutes per gallon, because the independent quantity is the gallons

Minutes per gallon, because the independent quantity is the minutes

Gallons per minute, because the independent quantity is the gallons

Gallons per minute, because the independent quantity is the minutes

Answer 1

Minutes per gallon, because the independent quantity is the gallons

Answer 2

the amount of time is infinite, the number of gallons in a tank of gas is not, so the amount of time we can run the car for is dependent not on time, but on the amount of fuel we have, therefore, the amount of time we will get to drive our car depends n the amount of fuel.(Gallns per minute, because the independent quantity is gallons, and not the other way around)