Time remaining:
word problem in Elementary Algebra

Algebra
Tutor: None Selected Time limit: 1 Day

A bus has traveled on a level road for 7 hours at an average speed 20 miles per hour than it traveled on a winding road. the time spent on the winding road was 5 hours. find the average speed on the level road if the entire trip was 656 miles

Sep 20th, 2014

Let s = av speed on the level road
then
(s-20) = av speed on the winding road
:
Write a dist equation: dist = speed * time
:

Lev Rd dist + winding Rd dist = 285 miles
3s + 2(s-20) = 285
3s + 2s - 40 = 285
5s = 285 + 40
5s = 325
s = 325/5
s = 65 mph on level roads
:
:
Check solution
3(65) + 2(65-20) =
195 + 90 = 285


Sep 20th, 2014

Studypool's Notebank makes it easy to buy and sell old notes, study guides, reviews, etc.
Click to visit
The Notebank
...
Sep 20th, 2014
...
Sep 20th, 2014
Feb 26th, 2017
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer