we know that
A unit rate is a ratio between two different units with a denominator of one
In this problem to find the unit rate divide the total distance by the total time
so
[tex]\frac{822.6}{18} \frac{Km}{hours}= 45.7\frac{Km}{hour}[/tex]
therefore
the answer is
The unit rate is equal to [tex] 45.7\frac{Km}{hour}[/tex]
