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  • The speed of a boat in still water is 8km/hr. If the boat covers a distance of 16.5 km upstream in three hours,find the speed of the current.

The speed of a boat in still water is 8km/hr. If the boat covers a distance of 16.5 km upstream in three hours,find the speed of the current.

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Speed of boat upstream=fracdistancetime=frac16.5km3hours=5.5km/hr
But,  
Speed of boat upstream=speed of boat in still water-speed of the current
herefore speed of current
   =speed of boat in still water-speed of boat upstream
   =8km/hr-5.5km/hr=2.5km/hr

Posted by

Deependra Verma

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