A boat travels in a stream moving at a speed of 5km/hr. If the speed of the boat while going upstream is 15 km/hr. What will be the speed of the boat in still water?
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Speed of boat upstream = 10 - 5 = 5 km/h
Speed of boat downstream = 10 + 5 = 15 km/h
∴ Total time taken =DistanceSpeed=205+3015=4+2=6h
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