To convert kilometers to miles, you can use the conversion factor given in the table where 1 mile is equivalent to 1.61 kilometers. To find the conversion factor for kilometers to miles, you need to express this relationship in the form of a fraction.
From the conversion from miles to kilometers: 1 mile = 1.61 kilometers
To find the conversion factor from kilometers to miles, you take the reciprocal of this relationship:
1 kilometer = \( \frac{1}{1.61} \) miles.
Thus, the conversion factor to convert kilometers to miles is:
\[ \frac{1 \text{ mile}}{1.61 \text{ kilometers}} \]
Therefore, the correct answer is:
\[ \text{StartFraction 1 mile Over 1.61 kilometers EndFraction} \]