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A boat can travel 10.2km upstream in 51 minutes. If the speed of water current is 1/5th of speed of boat in still water, how much distance in km the boat can travel downstream in 48 minutes?

Answer» N 14.4 KM.If speed of the BOAT=x km/h, then speed of the current=x/5 km/h and upstream speed=x-(x/5)=4x/5As boat can travel 10.2 km upstream in 51 minutes, so 10.2/(4x/5)=51/60 ,x=15So speed of the current=x/5=15/5=3 km/h and downstream speed=15+3=18 km/hDistance that boat can travel in 48 minutes or 4/5 HOURS =18*4/5=14.4 km


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