"пешеход идёт 2 км/ч скорость с лодки 3 км/ч когда пешихот догонит лодку"

When the pedestrian catches up to the boat, their speeds will be equal. So, we can set up the equation:

2 km/h = 3 km/h

Since the pedestrian's speed is slower, it will take some time for them to catch up to the boat. However, from the given information, it is not possible to determine when exactly the pedestrian will catch up to the boat.