1. The problem statement, all variables and given/known data A motorboat is going downstream overcame a raft at a Point A; t=60 min later it turned back and after some time passed the raft at a distance l=6km from point A. Find the flow velocity assuming the duty of the engine to be constant. 2. Relevant equations Average Speed,Displacement, Average Velocity 3. The attempt at a solution I drew a picture and got confused. I think I don't understand the question.