At what distance of the pier will the boat be in 15 s, moving along the river, if the speed of the current is 4 m / s?

The distance that the boat will travel is calculated using the formula:
S = V * t, where V is the speed of the river flow (V = 4 m / s), t is the time of boat movement (t = 15 s).
Let’s calculate the distance covered by the boat:
S = V * t = 4 * 15 = 60 m.
Answer: The boat will be at a distance of 60 m from the pier.