Problems On Trains

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21 Two trains, each 100 m long, moving in opposite directions, cross each other in 8 seconds. If one is moving twice as fast as the other, then the speed of the faster train is:

A
30 km/hr
B
45 km/hr
C
60 km/hr
D
75 km/hr

22 A train running at the speed of 72 km/h goes past a pole in 15 s. What is the length of the train?

A
150 m
B
200 m
C
300 m
D
350 m

23 Two trains, one from Howrah to Patna and the other from Patna to Howrah, start simultaneously. After they meet, the trains reach their desNeeshations after 9 hours and 16 hours respectively. The ratio of their speeds is

A
2 : 3
B
4 : 3
C
6 : 7
D
9 : 16

24 Two trains are running at 40 km/hr and 20 km/hr respectively in the same direction. Faster train completely passes a man in the slower train in 5 seconds. What is the length of the faster train?

A
23 m
B
23 $$\frac{2}{3}$$ m
C
27 3/2m
D
27 7/9

25 A train 120 m long moving at a speed of 60 km/hr crosses a train 130 m long coming from opposite direction in 6 seconds. The speed of the second train is:

A
90 km/hr
B
80 km/hr
C
70 km/hr
D
60 km/hr

26 Two trains are running in opposite directions with the same speed. If the length of each train is 120 metres, and they cross each other in 12 seconds, then the speed of each train is:

A
10 km/hr
B
18 km/hr
C
36 km/hr
D
72 km/hr

27 Two goods trains, each 500 m long, are running in opposite directions on parallel tracks. Their speeds are 45 km/hr and 30 km/hr respectively. Find the time taken by the slower train to pass the driver of the faster one:

A
12 sec
B
24 sec
C
48 sec
D
60 sec

28 A 240 m long train crosses a platform of equal length in 27 s. What is the speed of the train in km/h?

A
48
B
60
C
56
D
64

29 A train travelling with uniform speed crosses two bridges of lengths 300 m and 240 m in 21 s and 18 s, respectively. Find the speed of the train:

A
72 km/h
B
68 km/h
C
65 km/h
D
60 km/h

30 A 280 m long train crosses a platform which is three times of it's length, in 6 min 40 s. What is the speed of the train?

A
3.2 m/s
B
1.4 m/s
C
2.8 m/s
D
Cannot be determined