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 24 of 25.
Thameem ansari said:
8 years ago
45*5/18=75/6*30=375-130=245m.
DURAI said:
5 years ago
Well said, thanks @Coolburn.
(1)
Sowmiya said:
8 years ago
Nice explanation @Coolburn.
Karthik said:
2 decades ago
Yes fathima you are write.
Jagabandhu patra said:
1 decade ago
(45000/3600*30)-130 = 245.
(1)
Patel said:
8 years ago
Nice explanation @Rajesh.
Manoj Reddy said:
8 years ago
Nice explanation @Rajesh.
Mathsfobia said:
1 decade ago
Nice explanation survjt.
Sharmin said:
1 decade ago
30 = 130+x/45*3.6 = 245.
Abd said:
8 years ago
How 750? Explain please.
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