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 19 of 63.
Priya said:
6 years ago
@Koushik Reddy.
We use 5/18 to convert from km/hr to m/s in order to find the solution in terms of metres/seconds.
We use 5/18 to convert from km/hr to m/s in order to find the solution in terms of metres/seconds.
Vanitha peddireddy said:
3 months ago
1km = 1000m
1h = 3600sec
Length = speed/time.
S = 1000/3600 = 5/18.
6 * 5/18 = 16.66667.
16.66667m/sec * 9 = 150m.
1h = 3600sec
Length = speed/time.
S = 1000/3600 = 5/18.
6 * 5/18 = 16.66667.
16.66667m/sec * 9 = 150m.
(14)
Sai Nath said:
1 decade ago
Length of the train = L.
L = Speed (s)*Time (T).
L = S*T.
L = 60*5/18*9.
L = 60*5/2.
L = 300/2=>L = 150 m.
L = Speed (s)*Time (T).
L = S*T.
L = 60*5/18*9.
L = 60*5/2.
L = 300/2=>L = 150 m.
R SUBRAMANI said:
1 decade ago
Easy to improve our knowledge.
1 hour = 3600 secs.
1 km = 1000 m.
3600/1000 = 36/10 = 5/18.
60*5/18*9 = 150 m.
1 hour = 3600 secs.
1 km = 1000 m.
3600/1000 = 36/10 = 5/18.
60*5/18*9 = 150 m.
Adeleye Jeremiah said:
1 year ago
Here it is asked for the length of the train and not the distance covered by the train. So anyone explain me this?
(4)
Madrid said:
3 years ago
60km/hr X (9s x 1min/60s x 1hr/60min) = 60km/hr * 2.5x10^-3hr.
km/hr * hr = km.
So, the answer is 0.15km or 150m.
km/hr * hr = km.
So, the answer is 0.15km or 150m.
(17)
Owais Khan said:
2 years ago
Given;
60 km = 60 * 1000 = 60,000m
1 Hr = 60 * 60 = 3600 Sec.
Solution:
60,000/3600 * 9 Sec. = 150m.
60 km = 60 * 1000 = 60,000m
1 Hr = 60 * 60 = 3600 Sec.
Solution:
60,000/3600 * 9 Sec. = 150m.
(194)
Sudhakar said:
2 decades ago
It's useful to science students,and every student know the how to change the units.
so thankyou very much sir.
so thankyou very much sir.
Chithra said:
9 years ago
Thanks for all who have give explanation for this question, without your help I can't understand this problem.
Aman said:
8 years ago
We have to multiply 5/18 to convert the km/hr to m/s.
We have to convert it because time is given in seconds.
We have to convert it because time is given in seconds.
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