SOLUTION: A barge takes 3 hours to move (at a constant speed) downstream for 27 miles, helped by a current of 3 miles per hour. If the barge's engines are set at the same pace, find the time

Question 324804: A barge takes 3 hours to move (at a constant speed) downstream for 27 miles, helped by a current of 3 miles per hour. If the barge's engines are set at the same pace, find the time of its return trip against the current.
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Rate*Time=Distance
.
.
.
Let B be the barge speed in still water.

On the return trip, the current works against you.

It takes 9 hours to make the return trip.
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