A jet plane moving at a speed of 950 km per hour flew the path between the cities and mountains in 2 hours.

A jet plane moving at a speed of 950 km per hour flew the path between the cities and mountains in 2 hours. How fast an ordinary plane must fly to cover this distance in 4 hours.

Before finding the speed of an ordinary plane, you need to find the distance between the given cities.
Since a jet plane covers this distance in 2 hours, the distance will be:
50 * 2 = 1900 km.
To determine the speed of movement, we divide the found distance between cities by the time it takes an ordinary plane to cover it.
1900/4 = 475 km / h.
Method 2.
We find the relation of time.
4/2 = 2 times slower.
This means the speed should be 2 times less.
950/2 = 475 km / h.
Answer: 475 km / h.