Question 1040176
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A boat takes 2 hours to go 4 miles upstream. It can go 8 miles downstream in the same time. 
Find the rate of the current and the rate of the boat in still water.​ 
(Hint: Because the current pushes the boat when it is going​ 
downstream, the rate of the boat downstream is the sum of the rate of the boat and the rate of the current. 
The current slows down the boat when it is going​ upstream, so the rate of the boat upstream is the difference 
of the rate of the boat and the rate of the​ current.)
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See the lesson <A HREF=https://www.algebra.com/algebra/homework/word/travel/Selected-problems-from-the-archive-on-a-boat-floating-Upstream-and-Downstream.lesson>Selected problems from the archive on the boat floating Upstream and Downstream</A>, Problem 3 in this site.


Consider it as a sample. Read it attentively.


Then solve your problem by substituting your data.