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

Algebra ->  Customizable Word Problem Solvers  -> Misc -> SOLUTION: A student walks and jogs to college each day. She averages 5 km/h walking and 9km/h jogging. The distance from home to college is 8 km, and she makes the trip in 1 hr. How far d      Log On

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Question 874918: A student walks and jogs to
college each day. She averages 5 km/h walking and 9km/h
jogging. The distance from home to college is
8 km, and she makes the trip in 1 hr. How far does the student jog?
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
A student walks and jogs to
college each day. She averages 5 km/h walking and 9km/h
jogging. The distance from home to college is
8 km, and she makes the trip in 1 hr. How far does the student jog?
***
let x=jogging distance
8-x=walking distance
Travel time=distance/speed
..
x%2F9%2B%288-x%29%2F5=1
LCD:45
5x+9(8-x)=45
5x+72-9x=45
4x=27
x=27/4
How far does the student jog? 27/4 km