A boat on a river travels downstream between two points, 80 mi apart, in one hou


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A boat on a river travels downstream between two points, 80 mi apart, in one hour. The return trip against the current takes 

2
1
2
 hours. What is the boat's speed (in still water)?
 mph

How fast does the current in the river flow?
 mph
Nov 19th, 2017

DOWNSTREAN THE RATE IS 80 MPH 

RETURNING IS 80/2.5 = 32 MPH 

 THE CURRENT=(80-32)/2 =19
 BOAT SPEED = 80-19=61 MPH.


Apr 20th, 2015

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Nov 19th, 2017
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