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 37 of 59.
Sadvika said:
7 years ago
Thanks all for explaining the answer.
B.srikanya said:
7 years ago
Super, clear explanation. Thanks @Sundar.
Rider said:
6 years ago
60 km / hour means 1km per min and also 500m in 30s and 250m in 15 sec .
So, 250m per 15sec divide 250 and 15 by 5.
So we get 3sec speed which is 50m and we multiply 3 and 50 m by 3 we get the 9sec speed which 150m.
So, 250m per 15sec divide 250 and 15 by 5.
So we get 3sec speed which is 50m and we multiply 3 and 50 m by 3 we get the 9sec speed which 150m.
Kanth said:
6 years ago
Thanks all.
Madhu said:
6 years ago
The train covers its own distance/length in 9 seconds. Therefore, its length is the distance it covers in 9 seconds. Now lets convert the speed into metres and time in seconds. The train covers 60000 metres in 3600 seconds. Therefore in 9 seconds, it would cover;
(60000/3600*9) = 150 metres.
(60000/3600*9) = 150 metres.
Anitha said:
6 years ago
Nice explanation. Thanks all.
Sk Anwar said:
6 years ago
Change the km/hr to m/sec using:
0.278*60=16.68;
16.68*9=150.12,
Answer is near the 150.
0.278*60=16.68;
16.68*9=150.12,
Answer is near the 150.
Sana said:
6 years ago
Nice explanation, thanks all for explaining.
Evan said:
6 years ago
Thanks all for the explanation.
Pallavi said:
6 years ago
Explanations are very clear to understand. Thanks all.
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