# The speed of the boat is 20 km / h upstream and 24 km / h downstream. The boat spent 5 hours

The speed of the boat is 20 km / h upstream and 24 km / h downstream. The boat spent 5 hours on the way along the river. How much time did it take on the way back.

To solve the problem, you first need to determine the total distance that the boat has covered.

To do this, we multiply the speed of the boat along the river by the travel time.

In this case, we get:

24 * 5 = 120 km.

We find the time for which the boat covered the given distance at a speed of 20 km / h.

To do this, we divide the known distance by the speed upstream of the river.

We get:

120/20 = 6 hours.

Answer: The boat spent 6 hours on the way back.

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