The journey from one station to another was covered by a freight train in 9 hours and a passenger train in 6 hours

The journey from one station to another was covered by a freight train in 9 hours and a passenger train in 6 hours. What is the speed of a passenger train if the speed of a freight train is exactly 40 km / h.

1. To solve the problem, let us find how many kilometers the distance traveled by the trains, if we know that the speed of a freight train is 40 kilometers per hour and it was on the way for 9 hours.
9 * 40 = 360 kilometers.
2. Let’s find out in the second step what the speed of a passenger train is equal to, if it is known that it covered 360 kilometers in 6 hours.
360/6 = 60 kilometers.
Answer: The speed of a passenger train is sixty kilometers per hour.