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 2 of 21.
Mansi Bora said:
3 years ago
Why did we add 240 to 650?
Since we only want to find the time taken to cover 650m.
Anyone, please explain me.
Since we only want to find the time taken to cover 650m.
Anyone, please explain me.
(25)
PARAMESHWAR said:
3 years ago
I THINK ANS IS 65 SEC BECAUSE;
Directly calculate the answer;
240 = 24,
650 = X.
Cross multiplication.
240X = 15600.
X = 15600/240.
X = 65 Sec.
Directly calculate the answer;
240 = 24,
650 = X.
Cross multiplication.
240X = 15600.
X = 15600/240.
X = 65 Sec.
(46)
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)
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)
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)
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.
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)
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)
Sumesh.t said:
5 years ago
Please explain this clearly.
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