SOLUTION: you grive 200 miles in 3 hours before stopping for 30 minutes for lunch and gas. after lunch you travel 150 miles in an hour and a half. what was your average speed for the trip?
Algebra ->
Customizable Word Problem Solvers
-> Travel
-> SOLUTION: you grive 200 miles in 3 hours before stopping for 30 minutes for lunch and gas. after lunch you travel 150 miles in an hour and a half. what was your average speed for the trip?
Log On
Question 507662: you grive 200 miles in 3 hours before stopping for 30 minutes for lunch and gas. after lunch you travel 150 miles in an hour and a half. what was your average speed for the trip? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! you drive 200 miles in 3 hours before stopping for 30 minutes for lunch and gas. after lunch you travel 150 miles in an hour and a half. what was your average speed for the trip?
------
Average speed when driving
= (total distance)/(total driving time)
= (200+150)/(3+3/2)
= 350/4.5
= 77.78 mph
-----
Average speed overall:
= (200+150)/5
---
= 350/5 hrs = 70 mph
=============
Cheers,
Stan H.
======================
(