The train went at a speed of 80 kilometers per hour, and in 3 hours it covered two-fifths of the distance between cities

The train went at a speed of 80 kilometers per hour, and in 3 hours it covered two-fifths of the distance between cities, what is the distance between cities.

First, you need to determine the distance that the train traveled in 3 hours.
To do this, we multiply its speed of movement by the time spent on the path.
We get:
80 * 3 = 240 km.
To determine the total distance between cities, you need to divide the path already traveled by 2/5 of the total distance.
Thus, we get:
240/2/5 = 240 * 5/2 = 120 * 5 = 600 km.
Answer: The distance between the cities is 600 km.