### Class VI

Two trains running in opposite directions cross a man standing on the platform in 27 seconds and 17 seconds respectively and they cross each other in 23 seconds. The ratio of their speeds is:
1. 1 : 3
2. 3 : 2
3. 3 : 4
4. None of these
The length of the bridge, which a train 130 metres long and travelling at 45 km/hr can cross in 30 seconds, is:
1. 200 m
2. 225 m
3. 245 m
4. 250 m
A train 125 m long passes a man, running at 5 km/hr in the same direction in which the train is going, in 10 seconds. The speed of the train is:
1. 45 km/hr
2. 50 km/hr
3. . 54 km/hr
4. 55 km/hr
A train 360 m long is running at a speed of 45 km/hr. In what time will it pass a bridge 140 m long?
1. 40 sec
2. . 42 sec
3. . 45 sec
4. 48 sec
Two trains of equal length are running on parallel lines in the same direction at 46 km/hr and 36 km/hr. The faster train passes the slower train in 36 seconds. The length of each train is:
1. 50 m
2. . 72 m
3. . 80 m
4. 82 m
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