Problem P. 4214. (January 2010)
P. 4214. A freight train, undergoing uniform motion, passes the semaphore next to the rails in 4 seconds. Then it passes a 40-m long train, which moves with the same speed as the freight train but into the opposite direction, also in 4 seconds. What is the speed of the freight train in km/h?
Deadline expired on February 10, 2010.
Sorry, the solution is available only in Hungarian. Google translation
Megoldás. A vonat hossza 40 m, sebessége 36 km/h.
175 students sent a solution. 3 points: 134 students. 2 points: 14 students. 1 point: 14 students. 0 point: 10 students. Unfair, not evaluated: 3 solutions.