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 19 of 21.
Manish said:
5 years ago
Speed= Distance *Time then how come 240/24?
Please explain in detail.
Please explain in detail.
Aqsa said:
5 years ago
Thank you @Sohail khan.
Sumesh.t said:
5 years ago
Please explain this clearly.
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)
Shreya Shetty said:
5 years ago
I think there's no need to add 240. They have only asked what's the time to cross platform. Thus the answer must me 65secs.
(2)
T.S.Vijay said:
4 years ago
Thanks for explaining that option B is correct.
(2)
T.S.Vijay said:
4 years ago
Thanks for explaining that option B is correct.
Arbaz said:
4 years ago
@All.
When train at starting point of platform and its a start of train so remaining train is till not on platform so train will take platform length and train length too. That"s why we have to add both.
When train at starting point of platform and its a start of train so remaining train is till not on platform so train will take platform length and train length too. That"s why we have to add both.
(1)
Jay Chouhan said:
4 years ago
Hi friends,
I tell you the exact reason for why we will and 240 with the plate from length.
Because after 65 seconds the head only reach the last point of the palate form but if the train crosses the plate form then the train will go 240 m ahead so the total meter will be 890. Or you want to calculate time.
So, the time will be 65 s to the platform and another 24 s to cross that platform.
So, it can also add as 65 s + 24 s = 89 s.
I tell you the exact reason for why we will and 240 with the plate from length.
Because after 65 seconds the head only reach the last point of the palate form but if the train crosses the plate form then the train will go 240 m ahead so the total meter will be 890. Or you want to calculate time.
So, the time will be 65 s to the platform and another 24 s to cross that platform.
So, it can also add as 65 s + 24 s = 89 s.
(30)
Lokesh said:
3 years ago
For 240m = 24sec.
==> 1m = 1/10 sec.
Total distance need to travel is (240+650) = 890m.
==>For 890m = 890/10 sec,
= 89Sec.
==> 1m = 1/10 sec.
Total distance need to travel is (240+650) = 890m.
==>For 890m = 890/10 sec,
= 89Sec.
(9)
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