Respuesta :
Answer:
(1/4) hr/mile
Step-by-step explanation:
4 mph can be rewritten using other units of measurement:
Suppose we convert 'miles' to 'feet:'
Then:
4 miles   5280 ft
---------- * ------------- = 21120 ft/hr
   1 hr     1 mile
Note that we could invert 4 mph and obtain
 1 hr
-------- or (1/4) hr/mile
4 mi