1. Stream's Speed = ½ (Downstream Speed – Upstream Speed) Boat's Speed (Still Water) = ½ (Downstream Speed + Upstream Speed)

2. The only way to answer boat and stream questions is to comprehend the formulae, such as speed of boat = like the speed of boat = (speed in the direction of the stream + speed in the direction of the flow) / 2 or speed of the stream = (speed in the direction of the stream – of the stream Opposite move) / 2

3. Downstream formula = (u+v)Km/hr, where “u” is the speed of the boat in still water and “v” is the speed of the stream.