SOLUTION: A motorboat can go 14 miles downstream on a river in 20 minutes. It takes 30 minutes for this boat to go back upstream the same 14 miles. Find the speed of the current.
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Question 234205: A motorboat can go 14 miles downstream on a river in 20 minutes. It takes 30 minutes for this boat to go back upstream the same 14 miles. Find the speed of the current. Answer by checkley77(12844) (Show Source):
You can put this solution on YOUR website! D=RT OR R=D/T
R=14/(1/3)
R=14*3=42 MPH DOWNSTREAM.
R=14/(1/2)
R=14*2/1=28 MPH UPSTREAM.
(42-28)/2=14/2=7 MPH IS THE SPEED OF THE CURRENT.
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