From cities A and B, located at a distance of 275 km from each other, two trains left simultaneously in opposite

| August 1, 2021 | education

From cities A and B, located at a distance of 275 km from each other, two trains left simultaneously in opposite directions. One of them was walking at a speed of 75 km / h. At what distance from each other will these trains be 6 hours after the start of movement?

Let’s write down the speed of the second train as x km / h.

In this case, the speed of the trains moving away will be:

75 + x km / h.

In 6 hours the trains will pass:

6 * (75 + x) = 450 + 6 * x.

Find the distance between trains in 6 hours.

To do this, add the distance that the trains will travel to the initial distance.

We get:

275 + 450 + 6 * x = 725 + 6 * x km.

If we represent the speed of the second train as an integer, we get:

x = 50 km.

275 + 450 + 6 * 50 = 725 + 300 = 1025 km.

Answer: In 6 hours there will be 725 + 6 * km between trains.



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