# From two cities towards the opposite, the distance between which is 520 km, two trains simultaneously

June 27, 2021 | education

| **From two cities towards the opposite, the distance between which is 520 km, two trains simultaneously left towards each other and met after 4 hours. one train was traveling at an average speed of 60 km per hour. with what average speed another train was going**

Let’s denote the average speed of the second train through x km / h As the trains move closer together, their speeds will add up. Let’s make the equation:

4 * (60 + x) = 520;

4 * 60 + 4 * x = 520;

240 + 4 * x = 520;

4 * x = 520 – 240 = 280;

x = 280/4 = 70 km / h.

Answer: the speed of the second train is 70 km / h.

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