Aptitude - Problems on Trains - Discussion
Discussion Forum : Problems on Trains - General Questions (Q.No. 26)
26.
Two trains are running at 40 km/hr and 20 km/hr respectively in the same direction. Fast train completely passes a man sitting in the slower train in 5 seconds. What is the length of the fast train?
Answer: Option
Explanation:
| Relative speed = (40 - 20) km/hr = |  |
20 x | 5 |  |
m/sec = | |
50 | |
m/sec. |
| 18 | 9 |
 Length of faster train = |
|
50 | x 5 | |
m = | 250 | m = 27 | 7 | m. |
| 9 | 9 | 9 |
Discussion:
72 comments Page 8 of 8.
J_k said:
1 decade ago
@Shweta.
If the train is travelling in same direction then we have to add both the speeds, if the train is travelling in opp. direction then we have to subtract them.
If the train is travelling in same direction then we have to add both the speeds, if the train is travelling in opp. direction then we have to subtract them.
Harpreet said:
1 decade ago
What would be the length of slower train?
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers