Aptitude - Problems on Trains - Discussion
Discussion Forum : Problems on Trains - General Questions (Q.No. 2)
2.
A train 125 m long passes a man, running at 5 km/hr in the same direction in which the train is going, in 10 seconds. The speed of the train is:
Answer: Option
Explanation:
| Speed of the train relative to man = |  |
125 |  m/sec |
| 10 |
| = | |
25 | m/sec. |
| 2 |
| = | |
25 | x | 18 | km/hr |
| 2 | 5 |
= 45 km/hr.
Let the speed of the train be x km/hr. Then, relative speed = (x - 5) km/hr.
x - 5 = 45 
x = 50 km/hr.
Discussion:
478 comments Page 41 of 48.
Dinesh said:
8 years ago
Can you explain relative speed (x-5)?
Abuthahir said:
7 years ago
X-5 = 45.
Here x = 45+5,
Then x = 50.
Here x = 45+5,
Then x = 50.
Anjali said:
7 years ago
Thanks all for explaining the answer.
Vinod said:
7 years ago
Thanks all for explaining the answer.
Atique said:
1 decade ago
Nice Explanation Guys. Thanks a Lot.
Krish said:
1 decade ago
How to be solve this 25/2*18/5 = 45?
Geeth said:
1 decade ago
Thank you all guys I got many ideas.
Pattinson said:
10 years ago
18/5 is to convert seconds to hours.
Seshu said:
4 years ago
length = speed * time = 5 * 10 = 50.
(3)
Chetana said:
1 decade ago
Thanks frnd. I understand properly.
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