# The boat went along the river at a speed of 30 km / h, and against the current at a speed of 25.8 km / h.

July 28, 2021 | education

| **The boat went along the river at a speed of 30 km / h, and against the current at a speed of 25.8 km / h. What is the speed of the current?**

1. Find out the difference in speed. To do this, we subtract the speed of the boat against the river from the speed of the boat along the river:

30 km / h – 25.8 km / h = 4.2 km / h.

2. Find out what is the speed of the river. To do this, we divide the difference in the speeds of movement with the flow and against the flow in half:

4.2 km / h / 2 = 2.1 km / h.

Answer: the speed of the river is 2.1 km / h.

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