Answer:
5 miles per 1 hour
Step-by-step explanation:
A unit rate is a comparison of a value per 1. This means the denominator of the fraction is 1.
To find it, write a ratio between miles and hours as 3 1/8 miles per 5/8 hours. To make it a unit rate, divide the two values.
[tex]\frac{3\frac{1}{8} }{\frac{5}{8} } = 3\frac{1}{8} * \frac{8}{5} = \frac{25}{8} *\frac{8}{5} =\frac{200}{40} = 5[/tex]
This means the unit rate is 5 miles/ 1 hour.