Aptitude - Problems on Trains - Discussion
Discussion Forum : Problems on Trains - General Questions (Q.No. 1)
1.
A train running at the speed of 60 km/hr crosses a pole in 9 seconds. What is the length of the train?
Answer: Option
Explanation:
| Speed = |  |
60 x | 5 |  m/sec |
= | |
50 | m/sec. |
| 18 | 3 |
Length of the train = (Speed x Time).
 Length of the train = |
|
50 | x 9 | m = 150 m. |
| 3 |
Discussion:
597 comments Page 1 of 60.
Rithiksha said:
3 days ago
Please explain me.
(2)
Samyyyy said:
2 weeks ago
@All.
When we are converting km to meters, we have to take 5/18 as the options given in meters. So we have to do it.
When we are converting km to meters, we have to take 5/18 as the options given in meters. So we have to do it.
(7)
MANDARA GADADE KN said:
2 weeks ago
How we can take 5/18? Please explain.
(11)
Maha said:
1 month ago
Why are you use 5/18? Please explain.
(36)
Deep said:
1 month ago
Good question, Thanks all for explaining.
(6)
Snehalatha said:
2 months ago
Good explanation, Thanks all.
(5)
Gouthami said:
2 months ago
Good explanation. Thanks all.
(4)
Chaithanya said:
2 months ago
Good understanding and thinking questions.
(14)
Lokeshwari said:
2 months ago
Agree, 150 is the correct answer.
(15)
Devaritha said:
3 months ago
What is a pole?
In this problem, a “pole” is just a single post or point beside the railway track.
Distance covered by the train while crossing the pole = length of the train.
Formula:
Speed = Distance/Time.
And Distance = Speed × Time.
Convert km/hr into meters per second (m/s):
NOTE: 1 km/hr = 1×(5/18) m/s
60 km/hr = 60×(5/18) = 300/18 m/s
Multiply by time to get distance (length of the train): Distance = (300/18)×9 = 150 meters,
Answer: The length of the train = 150 meters.
In this problem, a “pole” is just a single post or point beside the railway track.
Distance covered by the train while crossing the pole = length of the train.
Formula:
Speed = Distance/Time.
And Distance = Speed × Time.
Convert km/hr into meters per second (m/s):
NOTE: 1 km/hr = 1×(5/18) m/s
60 km/hr = 60×(5/18) = 300/18 m/s
Multiply by time to get distance (length of the train): Distance = (300/18)×9 = 150 meters,
Answer: The length of the train = 150 meters.
(60)
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