Aptitude - Problems on Trains - Discussion
Discussion Forum : Problems on Trains - General Questions (Q.No. 7)
7.
Two trains of equal length are running on parallel lines in the same direction at 46 km/hr and 36 km/hr. The faster train passes the slower train in 36 seconds. The length of each train is:
Answer: Option
Explanation:
Let the length of each train be x metres.
Then, distance covered = 2x metres.
Relative speed = (46 - 36) km/hr
| = |  |
10 x | 5 |  m/sec |
| 18 |
| = | |
25 | m/sec |
| 9 |
 |
2x | = | 25 |
| 36 | 9 |
2x = 100
x = 50.
Discussion:
232 comments Page 16 of 24.
Santu said:
9 years ago
I don't understand last 3 lines. Can anyone explain last 3 lines, that how much get answer 50?
Ammu said:
1 decade ago
Hai how this 36 came? I didn't get it can you please explain clearly? why 2x? why 36 not 46?
Kousalya said:
10 years ago
My question is why we are including ten in the calculation its not given in the data right?
Prajwal said:
1 decade ago
You have taken 2x/36.
Is it the speed of the slower train or the time taken to overtake?
Is it the speed of the slower train or the time taken to overtake?
Anil said:
1 decade ago
Its not mention that trains are started at same point, then how can we solve the problem.
Abhishek said:
3 years ago
Why you have done, 2x/36 = 25/9?
And why not 2x/46 = 25/9?
Please explain me clearly.
And why not 2x/46 = 25/9?
Please explain me clearly.
(8)
Sid said:
1 decade ago
What is relative speed. Please explain me in somewhat detail manner. Cant understand.
Dhruvi said:
6 years ago
Is the faster train behind the slower one? Is that why we are adding length of both?
Ishwar shrestha said:
8 years ago
46-36 = 10,
10*5/18 = 2.77,
2.77*36s = 100,
So, the length of train is 100/2 = 50m.
10*5/18 = 2.77,
2.77*36s = 100,
So, the length of train is 100/2 = 50m.
Anne87 said:
1 decade ago
Good day! I just want to know why you used 2X/36? why did you used 36? Thank you!
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