Chapter 1, Problem 1.97P

Interpretation Introduction

Interpretation:

Assume that you are travelling to Mexico on highway I-19 from Tucson, Arizona. The distances on highway are marked in kilometers. According to one of the sign board the border was $\text{95 km}$ away and you estimate it to be $\text{150 miles}$ however in actual you traveled less than $\text{60 miles}$. The mistake in your calculations should be identified.

Concept Introduction:

We know that.

$\text{1 mile = 1}\text{.61 km}$

According to unit factor method or factor label method.

$\frac{\text{1 mile}}{\text{1}\text{.61 km}}=\frac{\text{1}\text{.61 km}}{\text{1 mile}}=1$.