Speed of the boat along the current river 40.5 km / h. The own speed of the boat is 36.5 km / h.

Speed of the boat along the current river 40.5 km / h. The own speed of the boat is 36.5 km / h. Find the speed of the current river and the speed of the boat against the current.

In order to solve this problem and find out what is the speed of the boat against the river, first we need to know the speed of the river. To do this, subtract the boat’s own speed from the speed of the boat along the river. Let’s make an example:

40.5 -36.5 = 4 km / h;

Let’s find the speed of the boat against the stream of the river:

36.5 – 4 = 32.5 km / h;

Answer: the speed of the river is 4 km / h, and the speed of the boat against the river is 32.5 km / h.