Question

best drove 45 miles and used 3 and 3/4 gallons of gas once I drove 85 miles and used 5 2/3 gallons of gas which driver use fewer gas per mile

Answer 1

In order to compare which driver used fewer gas per mile, let's divide the amount of gas used by the total miles ran of each driver:

`\begin{gathered} \text{driver 1:} \\ (3(3)/(4))/(45)=((15)/(4))/(45)=(1)/(12)\text{ gallon per mile} \\ \\ \text{driver 2:} \\ (5(2)/(3))/(85)=((17)/(3))/(85)=(1)/(15)\text{gallon per mile} \end{gathered}`

So the driver that used fewer gas per mile is the second one.