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:
587 comments Page 16 of 59.
Rajakumara said:
3 years ago
It's a very good explanation to understand the equation. Thanks, everyone.
(5)
Lokesh said:
3 years ago
Why do we use 5/18. Can anybody explain me? please.
(51)
Asds said:
3 years ago
How is it possible? Please explain to me.
(14)
Ermias Ch. said:
3 years ago
Speed = distance/time or velocity = distance/time or s = s/t.
Distance = speed*time.
= 60km/hr*9sec.
= 60(1km=1000m/1hr=3600sec)*9sec
(i.e. 1km = 1000m , 1hr = 60min, 1min = 60sec)
Sso 1hr = 60min*60sec.
= 60(1000m/3600sec)*9sec
= 60(10/36m/sec)*9sec,
= 60(0.277m/sec)*9sec,
= 60(2.493m),
= 149.58m = 150m answer.
Distance = speed*time.
= 60km/hr*9sec.
= 60(1km=1000m/1hr=3600sec)*9sec
(i.e. 1km = 1000m , 1hr = 60min, 1min = 60sec)
Sso 1hr = 60min*60sec.
= 60(1000m/3600sec)*9sec
= 60(10/36m/sec)*9sec,
= 60(0.277m/sec)*9sec,
= 60(2.493m),
= 149.58m = 150m answer.
(60)
Pirakash said:
3 years ago
Simplest way,
Our train took 9 secs at 60 kmph.
Convert the time taken into hours ->. 0025 hrs.
So, distance (required length) = Speed x Time = 60 x. 0025 =. 15 km = 150 m.
Our train took 9 secs at 60 kmph.
Convert the time taken into hours ->. 0025 hrs.
So, distance (required length) = Speed x Time = 60 x. 0025 =. 15 km = 150 m.
(59)
Nathiya.S said:
3 years ago
Thanks for all, it's a great explanation and it is very useful to me.
(7)
Swarit said:
3 years ago
60*5/18 = 50/3.
50/3 *9,
Then 50*3.
Answer = 150.
50/3 *9,
Then 50*3.
Answer = 150.
(7)
Santosh said:
3 years ago
Thanks all for explaining the answer.
(2)
Nithish.S said:
3 years ago
Convert km to m - 60000.
Convert hr to sec - 3600.
Sso, 60000/3600 = 16.666(speed) * 9 (time) = 150.
Convert hr to sec - 3600.
Sso, 60000/3600 = 16.666(speed) * 9 (time) = 150.
(22)
Rahul said:
3 years ago
Thanks everyone for the answer.
(1)
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