Aptitude - Problems on Trains - Discussion
Discussion Forum : Problems on Trains - General Questions (Q.No. 6)
6.
A train 240 m long passes a pole in 24 seconds. How long will it take to pass a platform 650 m long?
Answer: Option
Explanation:
| Speed = |  |
240 |  m/sec = 10 m/sec. |
| 24 |
 Required time = |
|
240 + 650 | sec = 89 sec. |
| 10 |
Discussion:
202 comments Page 11 of 21.
Manoj Kumar said:
10 years ago
In the question, they have not mentioned that the pole is also on the platform, then how should we consider the train length upto pole also?
Akhila said:
1 decade ago
@Pooja.
Here we must add 240. Because the total length is expressed as length of the train + length of the platform.
(i.e) 240+650=890.
Here we must add 240. Because the total length is expressed as length of the train + length of the platform.
(i.e) 240+650=890.
SREERAM said:
8 years ago
Pole is given to just calculate the speed of the train, In the question, nowhere mention pole is on the platform so the answer is 65 m/s.
Laxman said:
5 years ago
Speed = distance/time.
240/24 m/sec =10 m/sec.
So required time is;
time = distance/speed.
= 240+650/10 sec.
= 89 sec.
240/24 m/sec =10 m/sec.
So required time is;
time = distance/speed.
= 240+650/10 sec.
= 89 sec.
(1)
Brindha said:
1 decade ago
Because 10 m/s is speed of train.
Distance = speed/time.
(240+650) = 10/T.
890 (distance).
Time (T) = ?
10 (speed).
Time = 89 sec.
Distance = speed/time.
(240+650) = 10/T.
890 (distance).
Time (T) = ?
10 (speed).
Time = 89 sec.
Bishal gupta said:
10 years ago
If 89 sec is the answer then the 890 m long. It is solved answer said 10 m/s. So if the train is 650 m then 65 sec will be the answer.
Shakir saifi said:
9 years ago
The answer should be 65 because in this question only asking about how much time take to pass 650 mtr platform not the both platform.
Soumya Biswas said:
10 years ago
The train of 240 m long passes a platform of length 650 m, that means it crosses its own length and the length of platform together.
Rashid said:
2 decades ago
But the train is standing on the platform itself, so its length is included in platform length? what is the need to add 24 and 650.
Leena said:
9 years ago
Why did'nt we multiply the speed by the terms 5/18?
Ie. 240 = (x * 5/18) * 24.
x = 36 so the speed of the train will be 36 m/sec.
Ie. 240 = (x * 5/18) * 24.
x = 36 so the speed of the train will be 36 m/sec.
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