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 10 of 21.
Sidhartha said:
9 years ago
The given answer is wrong.
Train length + platform length + train length = 240 + 650 + 240 = 1130 = the distance to be covered to cross the platform.
Time taken is 1130/speed (10m/s) = 113 sec.
Train length + platform length + train length = 240 + 650 + 240 = 1130 = the distance to be covered to cross the platform.
Time taken is 1130/speed (10m/s) = 113 sec.
Sidhartha said:
9 years ago
The given answer is wrong.
Train length + platform length + train length = 240 + 650 + 240 = 1130 = the distance to be covered to cross the platform.
Time taken is 1130/speed (10m/s) = 113 sec.
Train length + platform length + train length = 240 + 650 + 240 = 1130 = the distance to be covered to cross the platform.
Time taken is 1130/speed (10m/s) = 113 sec.
Mir said:
9 years ago
We have to add both. Very simple, a train with 10 coaches will take a longer time to cross the platform as compared a train with just 3 coaches of the same length.
Triveni said:
9 years ago
@Yuvi.
How? Briefly, explain your answer.
How? Briefly, explain your answer.
HARIHARAN said:
9 years ago
Which is the right answer 65 or 89?
Please help me.
Please help me.
Milesh bhange said:
9 years ago
Don't forget to add trains length, question is asking answer about how much time it will take to cross a platform means train will star platforms one end to another in 65 seconds and what about trains end means its length 240 meter question said how much time it will take to cross a whole train means trains end. You have to add 240 its trains length.
Pravin said:
9 years 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.
Natraj said:
9 years 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.
Vipin said:
9 years ago
Easy tips!
240 + 650 = 890/10 m.
= 89.
240 + 650 = 890/10 m.
= 89.
PANASA HARISH KUMAR said:
9 years 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.
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