In one hour, a boat goes 11km along stream & 5km against the stream. The speed of boat in still water in kmph is:
7
5
8
9
3
Upstream Speed = 5 => 5 Kmph
Downstream Speed = 11 => 11 Kmph
Speed Of Boat = (11+5)/2 => 8 Kmph
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Upstream Speed = 5 => 5 Kmph
Downstream Speed = 11 => 11 Kmph
Speed Of Boat = (11+5)/2 => 8 Kmph