Aptitude - Problems on Trains - Discussion
Discussion Forum : Problems on Trains - General Questions (Q.No. 6)
6.
A train 240 m long passes a pole in 24 seconds. How long will it take to pass a platform 650 m long?
Answer: Option
Explanation:
| Speed = |  |
240 |  m/sec = 10 m/sec. |
| 24 |
 Required time = |
|
240 + 650 | sec = 89 sec. |
| 10 |
Discussion:
202 comments Page 8 of 21.
Onono solomon said:
7 years ago
Here, the question is asking for a specific time taken by the train to pass the platform (650/10 =65) not the total time is taken. If at all they asked for total time, we would add them up (65+24).
Sidhartha said:
9 years ago
The given answer is wrong.
Train length + platform length + train length = 240 + 650 + 240 = 1130 = the distance to be covered to cross the platform.
Time taken is 1130/speed (10m/s) = 113 sec.
Train length + platform length + train length = 240 + 650 + 240 = 1130 = the distance to be covered to cross the platform.
Time taken is 1130/speed (10m/s) = 113 sec.
Sidhartha said:
9 years ago
The given answer is wrong.
Train length + platform length + train length = 240 + 650 + 240 = 1130 = the distance to be covered to cross the platform.
Time taken is 1130/speed (10m/s) = 113 sec.
Train length + platform length + train length = 240 + 650 + 240 = 1130 = the distance to be covered to cross the platform.
Time taken is 1130/speed (10m/s) = 113 sec.
Rakes said:
9 years ago
I think it's like this that if the train will pass a man means pass its own length.
So velocity, s = 240/24 = 10 m/s.
Let it passes then platform in x sec.
10 = 240 + 650/24 + x.
So, x = 65.
So velocity, s = 240/24 = 10 m/s.
Let it passes then platform in x sec.
10 = 240 + 650/24 + x.
So, x = 65.
Raja said:
1 decade ago
The time taken by the train to cross the pole so the train passing the pole (time) is 24sec.
240m = 24secs.
650m = 65secs.
The time taken by the train to passing the station is 65+24 = 89sec.
240m = 24secs.
650m = 65secs.
The time taken by the train to passing the station is 65+24 = 89sec.
Thanmai said:
6 years ago
Length of the train is 240m.
Length of the platform is 650m.
How can you compare train length and platform length? Time taken can be calculated by adding length of the platform and the train.
Length of the platform is 650m.
How can you compare train length and platform length? Time taken can be calculated by adding length of the platform and the train.
Manu said:
3 years ago
Here is the solution
Just apply required time formula.
Required time = distance /speed.
In this case, train Len = 240 + platform = 650/speed.
And req tiime = 240 + 650/10 = 89 m/s thats it.
Just apply required time formula.
Required time = distance /speed.
In this case, train Len = 240 + platform = 650/speed.
And req tiime = 240 + 650/10 = 89 m/s thats it.
(13)
Gaurav Gawade said:
5 years ago
@Nithu.
When the train passes from the platform then the length of the train from start to end will pass the platform at the specific speed. So the train length will be added with a platform.
When the train passes from the platform then the length of the train from start to end will pass the platform at the specific speed. So the train length will be added with a platform.
Brindha said:
1 decade ago
Platform: 650 m
Train: 240 m.
If we didn't add distance it means. 65 seconds but the train still in platform.
So add the time to cross the pole with that. Now the correct time is 89 sec.
Train: 240 m.
If we didn't add distance it means. 65 seconds but the train still in platform.
So add the time to cross the pole with that. Now the correct time is 89 sec.
PANASA HARISH KUMAR said:
9 years ago
Dear Friends,
Train (240meters) Pole Platform (650 Meters)
T moving -> 10sec --> Train left platform.
240 + 650/10 = 89 sec.
Speed = distance(length)/time.
Speed = 240/24 = 10 m/sec.
Train (240meters) Pole Platform (650 Meters)
T moving -> 10sec --> Train left platform.
240 + 650/10 = 89 sec.
Speed = distance(length)/time.
Speed = 240/24 = 10 m/sec.
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