The distance between two points A and B is 168 km. A freight train travels this distance in 2.8 hours

| February 10, 2021 | education

The distance between two points A and B is 168 km. A freight train travels this distance in 2.8 hours, and a fast train in 2.1 hours. How many hours will these trains meet if they simultaneously leave these points towards each other?

To solve the problem, we first find the speed of the freight and fast train.

To do this, we divide the distance between points by the travel time.

We get:

168 / 2.8 = 60 km / h (freight train speed).

168 / 2.1 = 80 km / h (fast train speed).

We find the speed of the convergence of trains.

To do this, we summarize the speed of the freight train and the fast train.

60 + 80 = 140 km / h.

We find time before the meeting.

To do this, we divide the distance between points by the speed of approach.

We get:

168/140 = 1.2 hours.

Answer: Trains will meet in 1.2 hours.



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