From two stations, the distance between which is 720 km, two trains left simultaneously towards each other.

| January 18, 2021 | education

From two stations, the distance between which is 720 km, two trains left simultaneously towards each other. The speed of the first train is 75 km / h, and the speed of the second is 10 km / h higher. How far will the trains be from each other in 4 hours?

1) What is the speed of the second train? If it’s … more, then you need to add.

75 + 10 = 85 (km / h)

2) What is the speed of the convergence of trains. When moving towards each other, the approach speed is equal to the sum of the speeds of approaching objects.

75 + 85 = 160 (km / h)

3) How far will both trains travel together in 4 hours? To find the distance, you need to multiply the speed of approach by time.

160 * 4 = 640 (km)

4) How far will the trains be from each other in 4 hours? It is necessary to subtract the distance that they have covered from the distance between the stations.

720 – 640 = 80 (km)

Answer. 80 km.



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