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:
643 comments Page 13 of 65.
Arun said:
3 years ago
1km = 1000 meters.
1 hour = 3600 sec.
So, 1000/3600 = 5/18.
1 hour = 3600 sec.
So, 1000/3600 = 5/18.
(13)
Akshaya said:
3 years ago
Speed = (60 x 5/18)m/sec=(50/3)m/sec.
Length of the train = (Speed x Time).
Length of the train = (50/3 x 9)m = 150 m.
Length of the train = (Speed x Time).
Length of the train = (50/3 x 9)m = 150 m.
(13)
Henry Pautu said:
2 years ago
To find the length of the train, we use the formula is Distance=Speed×Time.
Given:
Speed of the train = 60 km/hr.
Time taken to cross the pole = 9 seconds.
Since 1 km/hr = (5/18) m/s, we convert:
60 X 5 / 18 = 300 / 18 = 16.67 m/s.
Since the train crosses a pole (which means the length of the train itself is covered in the given time):
Length of train = 16.67 × 9 = 150 meters.
Given:
Speed of the train = 60 km/hr.
Time taken to cross the pole = 9 seconds.
Since 1 km/hr = (5/18) m/s, we convert:
60 X 5 / 18 = 300 / 18 = 16.67 m/s.
Since the train crosses a pole (which means the length of the train itself is covered in the given time):
Length of train = 16.67 × 9 = 150 meters.
(13)
Shalini P said:
1 year ago
Thanks eveyone for explaining the answer.
(13)
Sariga Ashokkumar said:
1 year ago
A km/hr = [a×5÷18]m/s.
60 = [9×5÷18].
5÷2×60 = 150 meter.
60 = [9×5÷18].
5÷2×60 = 150 meter.
(13)
Shyam Prasanth said:
4 years ago
= 60×5/18.
= 300/18 (50×6=300 ,3×6=18).
= 50/3,
= 50/3×9,
= 50×3,
= 150.
= 300/18 (50×6=300 ,3×6=18).
= 50/3,
= 50/3×9,
= 50×3,
= 150.
(12)
MANDARA GADADE KN said:
11 months ago
How we can take 5/18? Please explain.
(12)
Kurnool ranjith said:
3 years ago
How 5 came?
(11)
Yash said:
2 years ago
150 is the correct answer.
(11)
Rohit Chouhan said:
1 year ago
First we converted into m/s to speed.
So length = speed *time.
So, length =50 * 3 = 150.
So length = speed *time.
So, length =50 * 3 = 150.
(11)
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