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 16 of 48.
Challu said:
1 decade ago
Think you are in a train, another one moving side by you in parallel, what will you experience? the train is in less speed of actualone. To find original speed you have to add your train speed.
Preethi said:
1 decade ago
You are right kirubha. Nice explanation challu.
Preethi said:
1 decade ago
Thanks Abhishek now I clear about relative speed.
Hari said:
1 decade ago
Excuse me? Why we divided 125 with 10?. Please explain me.
Ahmed said:
1 decade ago
Explanation given by ramesh chandra is very good and short, Please follow his process without wasting your time.
We need such a good explanation like that.
We need such a good explanation like that.
Uma said:
1 decade ago
Manoj explanation s superb. Thank you.
AKHIL said:
1 decade ago
18/5 = 1 km/hr = 1000/3600 m/s
= 10/36 m/s
= 5/18 m/s.
= 10/36 m/s
= 5/18 m/s.
Vinod salunke said:
1 decade ago
Nice explanation by ramesh chandra.
NIRMAL said:
1 decade ago
Vijay Kumar Kuppani you did solve problem very nicely again thanks.
Shobi said:
1 decade ago
Hi friends,
I ave confuesion in relative speed. Can I have some more explanation about relative speed?
I ave confuesion in relative speed. Can I have some more explanation about relative speed?
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