Answer: 3 miles per hour.
Step-by-step explanation:
Given: Distance traveled by Seth = [tex]1\frac{1}{4}\ miles[/tex]
Convert into improper fraction, we get
Distance traveled by Seth = [tex]\frac{5}{4}\ miles[/tex]
Time taken by Seth to travel the given distance = [tex]\frac{5}{12}\ hour[/tex]
The unit rate of Seth = [tex]\frac{distance}{time}=\frac{\frac{5}{4}}{\frac{5}{12}}=\frac{12}{4}=3\ miles\ per\ hour[/tex]
Hence, the unit rate of Seth = 3 miles per hour
