The distance between points A and B is 175 km. A freight train travels this distance in 3.6 hours
| January 28, 2021 | education
The distance between points A and B is 175 km. A freight train travels this distance in 3.6 hours, and a fast train in 2.4 hours. In how many hours will these trains meet if they simultaneously leave these points towards each other?
Before you can determine the time for which these trains will meet, you need to find their speeds.
Divide the distance between points by the travel time.
175 / 3.6 = 48.611 km / h (freight train speed).
175 / 2.4 = 72.916 km / h (fast train speed).
Let’s determine how fast the trains are moving towards each other.
48.611 + 72.916 = 121.527 km / h.
We find the time of meeting the trains.
We divide the indicated distance by the approach speed.
175 / 121.527 = 1.44 hours.
Answer: Trains will meet in 1.44 hours.
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