# From two stations, the distance between which is 720 km, two trains left at the same time, one to the other.

From two stations, the distance between which is 720 km, two trains left at the same time, one to the other. how many one train is 50 km / h, and the other -40 km / h. in how many hours they will meet.

1. First, let us determine the speed of convergence of two trains, which, according to the condition of the problem, rush towards each other at speeds equal to 50 km per hour and 40 km per hour. To do this, add the speed of the first train and the speed of the second train.

50 + 40 = 90 km per hour.

2. And now we find out how long after the start of movement, the meeting of these trains will occur if we know that the distance between the stations is 720 km.

720/90 = 8 hours.

Answer: The meeting of two trains moving towards each other will take place in 8 hours.

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