SOLUTION: A boat travels up river in 1.2 hours and down river in .9 hours. The boat travels 5 mph faster down river than up river. What speed is the boat traveling up and down river?

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: A boat travels up river in 1.2 hours and down river in .9 hours. The boat travels 5 mph faster down river than up river. What speed is the boat traveling up and down river?      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 360063: A boat travels up river in 1.2 hours and down river in .9 hours. The boat travels 5 mph faster down river than up river. What speed is the boat traveling up and down river?
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
let upstream speed be x
downstream speed = x+5
..
upstream time = 1.2 hours
downstream time = 0.9 hours
..
1.2x=0.9(x+5)
1.2x=0.9x+4.5
0.3x=4.5
x=4.5/0.3
x=15 mph upstream speed
20 mph downstream speed
...
m.ananth@hotmail.ca