From the two cities, the distance between which is 520 km, two trains simultaneously left to meet each other

From the two cities, the distance between which is 520 km, two trains simultaneously left to meet each other and met in 4 hours. One train was traveling at a speed of 60 km / h. How fast the other train was going.

1. Let’s find how many kilometers in 4 hours the train passed the speed of 60 kilometers per hour.
4 * 60 = 240 kilometers.
2. Let’s determine what distance the second train covered in 4 hours.
520 – 240 = 280 kilometers.
3. Let’s calculate with what speed the second train went per hour, if it is known that in 4 hours it covered 280 kilometers.
280/4 = 70 kilometers.
Answer: The speed of the second train was seventy kilometers per hour.