SOLUTION: The current on a portion of the Mississippi River is 3 miles per hour. A barge can go 6 miles upstream in the same amount of time it takes to go 10 miles downstream. Find the spe
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Question 894989: The current on a portion of the Mississippi River is 3 miles per hour. A barge can go 6 miles upstream in the same amount of time it takes to go 10 miles downstream. Find the speed of the boat in still water.
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
The current on a portion of the Mississippi River is 3 miles per hour. A barge can go 6 miles upstream in the same amount of time it takes to go 10 miles downstream. Find the speed of the boat in still water.
***
let x=speed of boat in still water
(x+3)=speed of boat downstream
(x-3)=speed of boat upstream
Travel time=distance/speed
..
6/(x-3)=10/(x+3)
10x-30=6x+18
4x=48
x=12
speed of the boat in still water=12 mph
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