The distance between the two stations is 440 km. At the same time both the trains run on parallel tracks from those stations and cross each other. The speed of one train is 5 km/hr more than that of the other train. If the distance between the trains after two hours is 210 km, then their speed in km/hr will be respectively.
1
75 km/hr and 70 km/hr respectively
2
60 km/hr and 55 km/hr respectively
3
55 km/hr and 50 km/hr respectively
4
65 km/hr and 60 km/hr respectively