Aptitude - Problems on Trains - Discussion
Discussion Forum : Problems on Trains - General Questions (Q.No. 3)
3.
The length of the bridge, which a train 130 metres long and travelling at 45 km/hr can cross in 30 seconds, is:
Answer: Option
Explanation:
| Speed = |  |
45 x | 5 |  m/sec |
= | |
25 | m/sec. |
| 18 | 2 |
Time = 30 sec.
Let the length of bridge be x metres.
| Then, | 130 + x | = | 25 |
| 30 | 2 |
2(130 + x) = 750
x = 245 m.
Video Explanation: https://youtu.be/M_d8WufJWKc
Discussion:
249 comments Page 25 of 25.
Gaurav rana said:
9 years ago
Why 130 is added to it?
Ravi said:
8 years ago
How do you take 5/18?
A.srinivas said:
1 decade ago
(x+130)/30=(45*5)/18
Chithu said:
1 decade ago
Very useful methods.
Kaushik vinay said:
5 years ago
45*18/5 = 25/3.
Janani said:
9 years ago
How get 5/18?
Pulak said:
1 decade ago
Thanks Nil.
Premasing s rathod said:
9 years ago
Why 18/5?
Hari said:
2 decades ago
Super.
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