SOLUTION: Teri drove an average of 52 miles per hour on a 5-hour trip. During the first 3 hours, she drove 60 miles per hour. What was her average speed for the last 2 hours of the trip?
Algebra ->
Customizable Word Problem Solvers
-> Travel
-> SOLUTION: Teri drove an average of 52 miles per hour on a 5-hour trip. During the first 3 hours, she drove 60 miles per hour. What was her average speed for the last 2 hours of the trip?
Log On
Question 743218: Teri drove an average of 52 miles per hour on a 5-hour trip. During the first 3 hours, she drove 60 miles per hour. What was her average speed for the last 2 hours of the trip? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Teri drove an average of 52 miles per hour on a 5-hour trip. During the first 3 hours, she drove 60 miles per hour. What was her average speed for the last 2 hours of the trip?
--------------------
Total distance: 5*52 = 260 miles
---
1st 3 hrs: 3*60 = 180 miles
----
Last 2 hrs: (260-180)/2 = 40 mph
=================================
cheers,
Stan H.
========================
(