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 17 of 65.
Sam said:
1 decade ago
1000/60 = 16.666.
= 16.666x9 = 150.
One more 1000/10 = 100.
= 60/10 = 6.
= 100 mtr/6 sec.
= 50 mtr/3 sec.
So 150 mtr in 9 sec.
= 16.666x9 = 150.
One more 1000/10 = 100.
= 60/10 = 6.
= 100 mtr/6 sec.
= 50 mtr/3 sec.
So 150 mtr in 9 sec.
Afzal said:
1 decade ago
Hello @Sundar,
I'm not understanding this 1 km/hr = 1000/3600 m/s.
But.
How come this?
= 10/36 m/s.
= 5/18 m/s.
Please explain.
I'm not understanding this 1 km/hr = 1000/3600 m/s.
But.
How come this?
= 10/36 m/s.
= 5/18 m/s.
Please explain.
Manikandan said:
3 years ago
Data:
T=9,
S=?,
L=?
Time = length/seconds.
S = 60*5/18.
S = 16.6666,
T = L/S.
9 = L/16.6666,
L = 9×16.6666,
L = 149.9,
L = 150.
T=9,
S=?,
L=?
Time = length/seconds.
S = 60*5/18.
S = 16.6666,
T = L/S.
9 = L/16.6666,
L = 9×16.6666,
L = 149.9,
L = 150.
(22)
Narayan Karki said:
3 years ago
Where,
Speed = Distance(s)/Time(t).
To convert speed into m/s from km/hr.
Then, use the formula = Speed x Time = 100/6 * 9 = 150m.
Speed = Distance(s)/Time(t).
To convert speed into m/s from km/hr.
Then, use the formula = Speed x Time = 100/6 * 9 = 150m.
(20)
SRKS said:
7 years ago
If you will convert Speed of the train which is 60km/hr.
Then it will be ( 150/9)m/sec,
You get the answer directly which is 150m.
Then it will be ( 150/9)m/sec,
You get the answer directly which is 150m.
Sajan said:
1 decade ago
= 9/3600*60*1000.
= 9 seconds/3600 seconds (We convert hours to seconds).
= 60*1000 (Convert KM to M).
= 9/3600*60000 = 150 M.
= 9 seconds/3600 seconds (We convert hours to seconds).
= 60*1000 (Convert KM to M).
= 9/3600*60000 = 150 M.
Gopi said:
9 years ago
Distance = Time *speed.
1km =1000Meteres,
1hr =3600 seconds,
Distance = 60*9/3600 =9/60 km,
Distane in Metres =(9/60)*1000 =150M.
1km =1000Meteres,
1hr =3600 seconds,
Distance = 60*9/3600 =9/60 km,
Distane in Metres =(9/60)*1000 =150M.
Neha kumari said:
2 years ago
For converting km to m 60*1000 = 60000m.
For converting hrs. to sec. 60 * 60 = 3600sec.
60000/3600 = 16.6666.
16.666 * 9 = 150.
For converting hrs. to sec. 60 * 60 = 3600sec.
60000/3600 = 16.6666.
16.666 * 9 = 150.
(42)
Ramesh said:
1 decade ago
3600sec = 60*10^3m.
9sec = ?.
answer = 9*60000/3600 = 150m.
Its very simple,
But I like your methods of solving for answer.
9sec = ?.
answer = 9*60000/3600 = 150m.
Its very simple,
But I like your methods of solving for answer.
Neeraj said:
1 decade ago
Much better explanation sir I am very impress by your solution that's very easy and easy understandable,
Thank you very much.
Thank you very much.
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