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:
626 comments Page 7 of 63.
Jyothi said:
1 year ago
Conversion formula for km/hr into m/sec = 5/18.
Conversion formula for m/sec into k/m = 18/5.
Conversion formula for m/sec into k/m = 18/5.
(34)
Utkarsh Anand said:
1 year ago
@All.
5/18 was used to convert km/hr into m/sec.
5/18 was used to convert km/hr into m/sec.
(33)
Gurram bhargavi said:
2 years ago
Length of train = speed * time.
= 9 * 60 * 5/18(converting km/hr into m/sec).
= 150 meters.
= 9 * 60 * 5/18(converting km/hr into m/sec).
= 150 meters.
(32)
Pavitra said:
3 years ago
1m = 1/1000km and
1s=1/3600hr.
So 1m/s = 3600/1000 = 18/5km/h.
1s=1/3600hr.
So 1m/s = 3600/1000 = 18/5km/h.
(30)
Wick said:
3 years ago
@All.
Here, 5/18 is used to convert Km/hr to m/s.
Here, 5/18 is used to convert Km/hr to m/s.
(30)
Ajay said:
2 years ago
Thanks everyone for explaining the answer clearly.
(30)
Prathna Ravindra said:
2 months ago
1 km = 1000 m.
1 hr = 3600 s.
So, Speed = distance/time = 1000/3600 = 5/18 m/s.
Therefore, converting 60km/hr to m/s i.e. 60 * 5/18 = 50/3 m/s.
That is Distance =Speed * time = 50/3 * 9 = 150m.
--DETAILED EXPLANATION--
1 km = 1000 m.
60 km = ?.
That is 60 * 1000/1 = 60000 m (Distance).
1 hr = 3600 s (Time).
Therefore,
Speed = Distance/Time = 60000/3600 = 50/3 m/s (Speed).
Crosses Pole in 9 seconds.
So, to find the length of the train, that is Distance = Speed * Time = 50/3 * 9 =150 m.
1 hr = 3600 s.
So, Speed = distance/time = 1000/3600 = 5/18 m/s.
Therefore, converting 60km/hr to m/s i.e. 60 * 5/18 = 50/3 m/s.
That is Distance =Speed * time = 50/3 * 9 = 150m.
--DETAILED EXPLANATION--
1 km = 1000 m.
60 km = ?.
That is 60 * 1000/1 = 60000 m (Distance).
1 hr = 3600 s (Time).
Therefore,
Speed = Distance/Time = 60000/3600 = 50/3 m/s (Speed).
Crosses Pole in 9 seconds.
So, to find the length of the train, that is Distance = Speed * Time = 50/3 * 9 =150 m.
(30)
Cheenie said:
3 years ago
5/18 means 5 meters/18 seconds so 5/18 is the conversion of 1km/h.
Thank you.
Thank you.
(29)
Harshitha said:
1 year ago
How 5/18 is calculated? please explain it.
(29)
Karegowda B H said:
2 years ago
60 * 1000m/3600s = 16.66m/s.
So, distance = 16.66 * 9 = 150m.
So, distance = 16.66 * 9 = 150m.
(28)
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