SOLUTION: Hello! I have this problem I am stuck on: A boat takes two hours to travel 20 miles up a river but only 1 hour and 20 minutes for the return trip find the rate of the boat in sti

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: Hello! I have this problem I am stuck on: A boat takes two hours to travel 20 miles up a river but only 1 hour and 20 minutes for the return trip find the rate of the boat in sti      Log On

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Question 928687: Hello!
I have this problem I am stuck on:
A boat takes two hours to travel 20 miles up a river but only 1 hour and 20 minutes for the return trip find the rate of the boat in still water and the rate of the currents. Thanks!

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
r-c = 20mph 20mi%2F%281hr%29
r + c = 15mph 20mi%2F%284%2F3%29hr
2r = 35mph
r = 17.5
c = 2.5mph 20-17.5