The scheduled speed of a train over a level track is 30 kmph. The distance between stations is 1km, and the station stopping time is 20 sec. the average speed of the train is
1
42 kmph
2
40 kmph
3
50 kmph
4
34 kmph
5
36 kmph
The scheduled speed of a train over a level track is 30 kmph. The distance between stations is 1km, and the station stopping time is 20 sec. the average speed of the train is