SOLUTION: It takes a fish 40 min to swim 10,000 feet upstream and 8 minutes to swim the same distance downstream. Find the speed of the fish in still water and the speed of the current.

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: It takes a fish 40 min to swim 10,000 feet upstream and 8 minutes to swim the same distance downstream. Find the speed of the fish in still water and the speed of the current.       Log On


   

Question 1145423: It takes a fish 40 min to swim 10,000 feet upstream and 8 minutes to swim the same distance downstream. Find the
speed of the fish in still water and the speed of the current.
A teacher invests $30,500 into two investments, one with a rate of 5% and one with a rate of 5.5%. If her earnings
are $1,615, how much did she invest in each investment?
Answer by ikleyn(52812) About Me  (Show Source):
You can put this solution on YOUR website!
.

(1) 

The speed of the fish in still water is  %281%2F2%29%2A%2810000%2F8+%2B+10000%2F40%29 = 750 ft/min.


The speed of the current is   %281%2F2%29%2A%2810000%2F8+-+10000%2F40%29 = 500 ft/min.


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