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 46 of 48.
Ayushi said:
9 years ago
Why x - 5? Not as 5- x?
Hari kumar said:
7 years ago
50 is the right answer.
Kamal said:
10 years ago
Options only in km/hr.
Ganga said:
8 years ago
Why we subtract (x-5)?
Azhr said:
5 years ago
(X-5) * 5/18 = 125/10.
Washeru said:
1 decade ago
Good expl. frm Rahuul
Venkatesh said:
8 years ago
Thank you @Nagapriya.
M.saravanan said:
2 decades ago
Please explain 18/5.
(1)
Ankita said:
2 decades ago
Why its substracted?
(1)
Antony said:
1 decade ago
Please explain 18/5.
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