Chapter 2, Problem 69E

Interpretation Introduction

Interpretation:

Miles is the unit of length while gal is the unit of volume.

Concept introduction:

$\begin{array}{c}1\text{ mile}=\text{1}\text{.609 km}\\ \text{1 gallon}=\text{3}\text{.785 L}\end{array}$

To convert the unit, apply conversion factor.

$\begin{array}{c}\frac{1\text{ mile}}{1.609km}=\frac{1.609km}{1\text{ mile}}\\ \frac{1\text{ gallon}}{3.785\text{ Liter}}=\frac{3.785\text{ Liter}}{1\text{ Gallon}}\end{array}$

To determine:

How many kilometers can the Prius travel on $15$ liters of gasoline.