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:
206 comments Page 13 of 21.
Bishal gupta said:
1 decade 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.
Manoj Kumar said:
1 decade 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?
Soumya Biswas said:
1 decade 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.
ASHWINI said:
1 decade ago
We have to add train length because train has to travel the whole length of platform and it has to cover it's own length.
Asiri said:
1 decade ago
The train is 240 m long. Therefore we add (650+240) together.
Bappy said:
1 decade ago
As the length of trains is smaller than bridge so here train has to cover his as well as bridge distance. If the length of trains was bigger than platform then only by covering train's length platform length can be passed.
PANASA HARISH KUMAR said:
1 decade ago
Dear Friends,
Train (240meters) Pole Platform (650 Meters)
T moving -> 10sec --> Train left platform.
240 + 650/10 = 89 sec.
Speed = distance(length)/time.
Speed = 240/24 = 10 m/sec.
Train (240meters) Pole Platform (650 Meters)
T moving -> 10sec --> Train left platform.
240 + 650/10 = 89 sec.
Speed = distance(length)/time.
Speed = 240/24 = 10 m/sec.
Vipin said:
1 decade ago
Easy tips!
240 + 650 = 890/10 m.
= 89.
240 + 650 = 890/10 m.
= 89.
Natraj said:
1 decade ago
d = 240, s = 24 sec. Total d = 650, Speed = ?.
d = total d + d = 650 + 240 = 890.
Speed = d/t = 240/24 = 10 m/s to pass a platform.
d = 650, Speed = 10 m/s, t =?
t = d/s = 890/10 = 65 sec
Even I have 65 sec as an answer. Then how to get 89 sec? Please help me.
d = total d + d = 650 + 240 = 890.
Speed = d/t = 240/24 = 10 m/s to pass a platform.
d = 650, Speed = 10 m/s, t =?
t = d/s = 890/10 = 65 sec
Even I have 65 sec as an answer. Then how to get 89 sec? Please help me.
Pravin said:
1 decade ago
@Natraj.
Please read your last line carefully,
That is d/s = 890/10 and the answer is = 89.
Please read your last line carefully,
That is d/s = 890/10 and the answer is = 89.
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