# From two stations, the distance between which is 30 km, two trains depart simultaneously in opposite directions

**From two stations, the distance between which is 30 km, two trains depart simultaneously in opposite directions, moving away from each other: one goes at a speed of 55 km / h, the other – 70 km / h. What is the distance between them.**

To solve the problem, you first need to determine the speed at which trains are moving apart from each other.

To do this, we sum up the speed of the first and second trains.

We get:

55 + 70 = 125 km / h.

In order to determine what the distance will be between them for a period of time t, it is necessary to multiply the speed of distance by time and add 30 km to the obtained distance.

In this case, we get:

125 * t + 30.

In the event that the time t is equal to 2 hours, we get:

125 * 2 + 30 = 250 + 30 = 280 km.

Answer: In time t, there will be 125 * t + 30 km between trains.