SOLUTION: Carlos drove to the lake and back. The trip there took three hours and the trip back took five hours. He averaged 33 km/h on the return trip. Find the average speed of the trip the

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: Carlos drove to the lake and back. The trip there took three hours and the trip back took five hours. He averaged 33 km/h on the return trip. Find the average speed of the trip the      Log On

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Question 991695: Carlos drove to the lake and back. The trip there took three hours and the trip back took five hours. He averaged 33 km/h on the return trip. Find the average speed of the trip there.
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
Carlos drove to the lake and back.
The trip there took three hours and the trip back took five hours.
He averaged 33 km/h on the return trip.
Find the average speed of the trip there.
:
let a = the average for the trip there
:
Write a dist equation; dist = speed * time
:
dist there = dist back
3a = 5(33)
3a = 165
a = 165/3
a = 55 mph on the way there