From two stations, the distance between which is 450 km, two trains simultaneously departed towards each other.

| May 13, 2021 | education

From two stations, the distance between which is 450 km, two trains simultaneously departed towards each other. The speed of the first train is 120 km / h, and the speed of the second train is 4 times less than the speed of the first. In how many hours will they meet?

Let’s calculate the speed of the second train by dividing the speed of the first train – 120 km / h by 4:

120 km / h: 4 = 30 km / h.

The speed of the second train is 30 km / h.

Let’s calculate the total speed of trains, adding the speed of the first – 120 km / h and the speed of the second – 30 km / h:

120 km / h + 30 km / h = 150 km / h.

The total train speed is 150 km / h.

Find out the time it takes for trains to cover the distance of 450 km, dividing the path by the speed.

450 km: 150 km / h = 3 hours.

Answer: trains will meet in 3 hours after departure.



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