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A boat takes 12 hours to cover a distance of 180km in downstream,while still in water ,it takes 8 hrs more.find out time taken by boat to over a distance of 72km upstream?
A boat takes 12 hours to cover a distance of 180km in downstream,while still in water ,it takes 8 hrs more.find out time taken by boat to over a distance of 72km upstream?
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Apr 16
Let the speed of the boat in still water be x km/hr and the speed of the stream be y km/hr.