Problema Solution
Dr.wright allowed one hour to reach an appointment 50 miles away. After driving 30 miles she realized that her speed would have to be increased 15 mi/h for the remainder of the trip. What was her speed for the first 30 miles
Answer provided by our tutors
1 = 30/V + 20/(V+15)
V2-35V-450=0
(V-45)(V+10) = 0
V = 45 MILES/HOUR