# Two trains left the station simultaneously in opposite directions. The speed of one of them is 80 km / h

**Two trains left the station simultaneously in opposite directions. The speed of one of them is 80 km / h, and the speed of the second is 70 km / h. In how many hours will the distance between trains be 300 km?**

The solution of the problem:

1) From the condition of the problem, we know that:

1. Trains left one station;

2. Trains left at the same time;

3. Trains left in opposite directions;

4. The speed of the first train is V1 = 80 km / h;

5. The speed of the second train is V2 = 70 km / h;

6. Distance between trains S = 300 km.

2) Since the trains were moving in opposite directions, we find their speed V3:

V3 = V1 + V2 = 80 + 70 = 150 km / h.

3) Find out the time t for which they will travel the path S = 300 km:

t = S / V3 = 300/150 = 3 hours.

Answer: The distance of 300 km between trains will be in 3 hours.