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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