SOLUTION: Chens motorboat took 3 hr to make a trip downstream with a 6mph current. The return trip against the same current took 5 hr. Find the speed of the still water.

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Question 1059016: Chens motorboat took 3 hr to make a trip downstream with a 6mph current. The return trip against the same current took 5 hr. Find the speed of the still water.
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
               SPEED        TIME        DISTANCe

DOWN            r+6           3           d

UPSTREAM        r-6           5           d


%28r%2B6%29%2A3=%28r-6%29%2A5