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:
247 comments Page 22 of 25.
RAGHURAM S said:
9 years ago
How 25/2 came?
45 * 5/18 = 25/2?
How?
45 * 5/18 = 25/2?
How?
Sid said:
8 years ago
From where 5/18 comes?
Please tell me.
Please tell me.
Subhra said:
9 years ago
L = 45 x 5/18 x 30 = 375 - 130 = 245m.
Nilesh said:
6 years ago
How will you get 25/2 from 45 * 5/18?
Adaeze Thompson said:
3 years ago
How do you get 25/2? Explain, please.
(15)
Aneesanser said:
8 years ago
Thank you for all discussing answer.
Kuenzang wangmo said:
6 months ago
How 5/18 came? Please explain to me.
(15)
Sid said:
4 years ago
Why it is +x, it also be -x, right?
(1)
Zainab said:
8 years ago
@Anil Bhadani.
Clear explanation.
Clear explanation.
Banda said:
7 years ago
Hi, Good explanation. Thanks all.
(1)
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