Two trains 96 m and 72 m long run at the speeds of 68 km/h and 44 km/h respectively, in opposite directions on parallel tracks. The time which they take to cross each other is
1). 8 s
2). 6.2 s
3). 7 s
4). 5.4 s
A train 400 meters long is moving at a speed of 20 m/s. Time taken to cross a bridge of 100 meters by the train is –
1). 5 seconds
2). 10 seconds
3). 20 seconds
4). 25 seconds
Two trains start from Lucknow and Delhi respectively and travel towards each other at a speed of 50 km/hr. and 40 km/hr. respectively. By the time they met the first train had travelled 100 km more than the second. Find the distance between Lucknow and Delhi?
1280 km
680 km
900 km
624 km
A boat goes 8 km upstream in 2 hours and 12 km downstream in 1.5 hours. Find the speed of current.
1). 6 km/hr
2). 8 km/hr
3). 2 km/hr
4). 4 km/hr
Two trains start at the same time from Aligarh and Delhi and proceed towards each other at the rate of 14 kmph and 21 kmph respectively. When they meet, it is found that one train has travelled 70 km more than the other. The distance between two stations is
1). 350 km
2). 140 km
3). 210 km
4). 300 km