👉 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:
A. 45 km/hr
B. 50 km/hr
C. 54 km/hr
D. 55 km/hr
👉 Answer & Explanation:
Relative Speed of Train respective to Man : (125 / 10) m/sec
= 12.5 m/sec [ As we Know to convert m/sec -> km/hr we must multiply with 18/5 ]
= 12.5 x (18/5) km/hr
= 45 km/hr
Consider the spped of the train is X km/hr then Relative speed of Man will be X-5 km/hr
So, X - 5 = 45
X = 50 km/hr
- Related Question:
A train passes a station platform in 36 seconds and a man standing on the platform in 20 seconds. If the speed of the train is 54 km/hr, what is the length of the platform?
- A. 180 m
- B. 200 m
- C. 240 m
- D. 320 m
- Answer : C ( 240 m )
The length of Mumbai mail is 120 m and that of Punjab mail is 80 m. These two trains are running in the same direction with velocities of 40 kmph and 50 kmph respectively. The time taken by them to cross each other is:
- A. 8 sec
- B. 72 sec
- C. 11.5 sec
- D. 12.5 sec
- Answer : B ( 72 sec )
A train crosses a platform 100 m long in 60 seconds at a speed of 45 km/hr. The time taken by the train to cross an electric pole is :
- A. 36 sec
- B. 38 sec
- C. 44 sec
- D. 52 sec
- Answer : D ( 52 sec )
Two trains are moving in opposite directions @60 Km/hr and 90 Km/hr. Their Lengths are 1.10 km and 0.9 Km respectively. The time taken by the slower train to cross the faster train in seconds is :
- A. 36
- B. 45
- C. 48
- D. 49
- Answer : C ( 48 )
A train 240 m long passes a pole in 24 seconds. How long will it take to pass a platform 650 m long?
- A. 65 sec
- B. 89 sec
- C. 100 sec
- D. 150 sec
- Answer : B ( 89 sec )
The distance between Chennai to Covai is 820 km. Sadhapti express starts from Chennai to Covai at 72 km/hr. 50 minutes later Mangalore express leaves Covai to Chennai on the parallel tracks at 80 km/hr. How far from Covai will they cross each other?
- A. 400 km
- B. 350 km
- C. 270 km
- D. 540 km
- Answer : A ( 400 km )
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