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:
475 comments Page 40 of 48.
Subu D. said:
7 years ago
125 = speed /10.
Speed = 125/10= 25/2.
Speed = 125/10= 25/2.
Owona Julius said:
2 years ago
How - 5 came? Please explain this step.
(17)
Amit said:
1 decade ago
Hi friend's
Hey ravi nice explanation.
Hey ravi nice explanation.
Uma said:
1 decade ago
Manoj explanation s superb. Thank you.
Chandu said:
1 decade ago
Why it is subtracted ? please explain.
Priyanka said:
8 years ago
Why we consider v=5 to subtract u - v?
Moses Obia said:
4 years ago
Where was 18 got from? Please explain.
(6)
Sourav said:
9 years ago
Why did we not converted 125 m to km?
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.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers