31.

A train 250m long can cross a bridge of length 350m in 20sec, then find the speed of the train?

A. 30 m/sec B. 32 m/sec
C. 35 m/sec D. 36m/sec
Answer and Explanation
Answer:A
Explanation: Length = Speed * Time Speed= Length/Time Speed= 600/20 Speed=30 M/Sec
32.

The two trains of lengths 400m, 600m respectively, running at same directions. The faster train can Cross the slower train in 180sec, the speed of the slower train is 48km. then find the speed of the Faster train?

A. 58 Kmph B. 68 Kmph
C. 78 kmph D. 55 Kmph
Answer and Explanation
Answer:B
Explanation: Length of the two trains = 600m + 400m Speed of the first train = X Speed of the second train= 48 Kmph 1000/X - 48 = 180 1000/x - 48 * 5/18 = 180 50 = 9X - 120 X = 68 Kmph
33.

A man sitting in a train which is traveling at 50 kmph observes that a goods train, traveling in opposite direction, takes 9 seconds to pass him. If the goods train is 280 m long, find its speed.?

A. 60 B. 62
C. 64 D. 65
Answer and Explanation
Answer:B
Explanation: Relative speed = m / sec = kmph = 112 kmph. Speed of goods train = (112 - 50) kmph = 62 kmph.
34.

A jogger is running at 9 kmph alongside a railway track is 240 meters ahead of the engine of a 120 meters long train running at 45 kmph in the same direction. In how much time will the train pass the jogger ?

A. 48 sec B. 36 sec
C. 18 sec D. 72 sec
Answer and Explanation
Answer:B
Explanation: Speed of the train relative to jogger = (45-9) km/hr = 36 km/hr = = 10 m/sec Distance to be covered =(240 + 120)m = 360 m Time taken = sec = 36 sec
35.

A 270 metres long train running at the speed of 120 kmph crosses another train running in opposite direction at the speed of 80 kmph in 9 seconds. What is the length of the other train ?

A. 230 m B. 240 m
C. 260 m D. 320 m
Answer and Explanation
Answer:A
Explanation: Relative speed = (120 + 80) km/hr == Let the length of the other train be x metres. Then, => x + 270 = 500 => x = 230.