Question 704152
1/5 hour:  1/4 mile


Multiply both parts by 5


5*1/5 hour:  5*1/4 mile


5/5 hour:  5/4 mile


1 hour: 5/4 mile


So if "It takes Bob 1/5 hour to hike 1/4 mile", then he can hike 5/4 miles or 1.25 miles in 1 hour.


Therefore, his unit rate is 5/4 mph or 1.25 mph