Posted by **angela** on Thursday, February 26, 2009 at 7:54am.

A student walks and jogs to college each day. She averages 5km/h walking and 9km/h jogging. The distance from home to college is 8km and she makes the trip in 1 hour. How far does the student jog.

To set up the equation I got:

5(x)+9(8-x)=8

5x+72-9x=8

-4x=-64

x=16

but this gives me a negative number for the walking.

WHAT IS THE CORRECT WAY TO SET UP AND SOLVE THE EQUATION?

- math algebra -
**Damon**, Thursday, February 26, 2009 at 8:02am
You x is TIME, not distance

5(x) + 9 (1-x) = 8

5 x + 9 -9 x = 8

- 4x = - 1

x = 1/4 or 15 minutes walking

3/4 hour jogging

3/4 * 9 = 27/4 = 6.75 km jogging

- math algebra -
**mark**, Thursday, February 26, 2009 at 8:06am
OOOH! I see, thanks for the help!

- math algebra -
**surer**, Thursday, February 26, 2009 at 10:26am
i need help with my homewok please help out and is hard that why i am asking help.

- math algebra (surer) -
**drwls**, Thursday, February 26, 2009 at 5:57pm
Post your question separately, not as part of this question. Click on the link at the top labeled "Post a new question"

## Answer this Question

## Related Questions

- algebra - A student walks and jogs to college each day.She averages 5km/h ...
- math - On a treadmill, Andrea walks a distance of 2 km. She then doubles the ...
- physics - a man walks 8km North and then 5km in a. direction 60degrees. find ...
- math - sherie exercises each day. she can walk a mile in 20 minutes, but if she ...
- math - a man walks 8km north and 5km in a direction east of north.find the ...
- Math - Linda jogs every 3rd day and swims every 4th day. If she is jogging on ...
- algebra...redo. - Yesterday Lucy walked 2 hours and jogged 1/2 hour and covered ...
- Math - can you help i dnt know what to do so could you tell me how to solve it 1...
- physics - a boy walks to a school at a rate of 6km with a speed of 2.5km/h and ...
- Math - Am having trouble figuring out how to work this problem. We are currently...