Question 243379
The basic formula is D=r*t.  You are given that D=10 mi and r=40 mph, and time t is the unknown:


10=40t


Divide both sides by 40, and you get t=10/40=1/4 hour.  In other words 15 minutes.


Dr. Robert J. Rapalje, Retired
Seminole State College of Florida
Altamonte Springs Campus