A locomotive in the Czech republic. Image source
The story question that once made me confused when I was in elementary school :D
Train A departs from city X towards city Y at 8.23 am with a constant speed of 73 km/h, distance of city X to city Y is 573 km, while train B departs from city Y towards city X at 9.08 am at constant speed 95 km/hour.
because the machinist's negligence causes train A to collide with train B.
The question is, what time did the train collide with each other?