SOLUTION: A boat travels 45 mi upstream (against the current) in 5h. the boat travels the same distance downstream 3 h. what is the rate of the boat in still water? what is the rate of the c

Algebra ->  Linear-equations -> SOLUTION: A boat travels 45 mi upstream (against the current) in 5h. the boat travels the same distance downstream 3 h. what is the rate of the boat in still water? what is the rate of the c      Log On


   

Question 123989: A boat travels 45 mi upstream (against the current) in 5h. the boat travels the same distance downstream 3 h. what is the rate of the boat in still water? what is the rate of the current?
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
D=RT
45=5R
R=45/5
R=9 MPH AGAINST THE CURRENT.
45=3R
R=45/3
R=15 MPH WITH THE CURRENT.
(15-9)/2=6/2=3 MPH IS THE RATE OF THE CURRENT.