Aptitude - Problems on Trains - Discussion
Discussion Forum : Problems on Trains - General Questions (Q.No. 19)
19.
A train speeds past a pole in 15 seconds and a platform 100 m long in 25 seconds. Its length is:
Answer: Option
Explanation:
Let the length of the train be x metres and its speed by y m/sec.
| Then, | x | = 15  y = |
x | . |
| y | 15 |
 |
x + 100 | = | x |
| 25 | 15 |
15(x + 100) = 25x
15x + 1500 = 25x
1500 = 10x
x = 150 m.
Discussion:
55 comments Page 6 of 6.
Srinu said:
10 years ago
Please tell me the answer.
Sanjana said:
6 years ago
Good explanation.
Madhavi said:
1 decade ago
Thank you pavan.
Madhan said:
6 years ago
Thanks all.
Amit said:
1 decade ago
Why 25-10?
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