From two cities the distance between which is 840 km, two trains left at the same time towards each other.

| January 14, 2021 | education

From two cities the distance between which is 840 km, two trains left at the same time towards each other. The speed of the first is 100 km / h, the second is 10 km / h more. In how many hours will the trains meet?

1. According to the problem, the speed of the second train is 10 km / h more than the speed of the first train.
100 (km / h) + 10 (km / h) = 110 (km / h) – the speed of the second train.
2. Find the speed of the convergence of trains. To do this, you need to sum up the train speeds:
100 (km / h) + 110 (km / h) = 210 (km / h) – the speed of the convergence of trains.
3. Find the time after which the trains will meet:
840 (km): 210 (km / h) = 4 (h) – this is the time it takes for trains to meet each other.
Answer: Trains will meet in 4 hours.



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