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 7 of 21.
Rudraksha Tyagi said:
5 months ago
The train is 240 meters long, and the platform is 650 meters long.
When a train passes a platform, it must cover both its own length and the length of the platform.
So total distance=240 + 650 = 890meters.
When a train passes a platform, it must cover both its own length and the length of the platform.
So total distance=240 + 650 = 890meters.
(13)
Ravi said:
1 decade ago
I am done my way.
If its takes 24s to cross 240m,
So how much it'l take to cross 650m long platform. 240+650=890.
You just put one equation like.
240m=24s.
890m=?, then cross multiplication.
890*24/240=89.
If its takes 24s to cross 240m,
So how much it'l take to cross 650m long platform. 240+650=890.
You just put one equation like.
240m=24s.
890m=?, then cross multiplication.
890*24/240=89.
Hitesh said:
1 decade ago
We add both of them because we have to calculate the time taken to cross the platform. 240 is the length of train. So total distance, the engine has to cover is 240 (train length) + 650 (platform length).
Obul Naidu said:
5 years ago
Speed=(lt+lp)/time.
lt = length of the train.
lp = lenght of the platform.
Without adding platform length the train speed?
Seed=(240)/24.
Speed=24m/s.
with platform length.
Time=(240+650)/10.
Time=89sec.
lt = length of the train.
lp = lenght of the platform.
Without adding platform length the train speed?
Seed=(240)/24.
Speed=24m/s.
with platform length.
Time=(240+650)/10.
Time=89sec.
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)
Pavan said:
1 decade ago
Pavan,
hello dudes there is a simple common sense
The length of the train is 240m
The length of the platform is 650m
So the total dstn to cross is (240+650)
=890m
ther fore
890/spd
=890/10
=89sec
hello dudes there is a simple common sense
The length of the train is 240m
The length of the platform is 650m
So the total dstn to cross is (240+650)
=890m
ther fore
890/spd
=890/10
=89sec
Rahul said:
1 decade ago
If we are asked only the time taken to cover 650 m long platform, then the rigth answer is 65.
If we are asked to find the total time to cover the whole distance (240+650) , then the rigth answer is 89.
If we are asked to find the total time to cover the whole distance (240+650) , then the rigth answer is 89.
Kiran said:
1 decade ago
Guys I'm new to here can u ppl plz help....
Whyy can't i solve dis problem in disz way...
240 meters in 24 secs..
650 meters means ??
(650*24)/240 = 65 meters...
is this wrong ....
plzzz help me...
Whyy can't i solve dis problem in disz way...
240 meters in 24 secs..
650 meters means ??
(650*24)/240 = 65 meters...
is this wrong ....
plzzz help me...
Satish said:
1 decade ago
Train of length 240 mts.....
It covers 240 mts in 24 sec...
During crossing a bridge it has to cover 650 mts additional to 240....
So 240mts in 24 sec
Then (240+650) in x sec
i.e x=24*890/240===>89
It covers 240 mts in 24 sec...
During crossing a bridge it has to cover 650 mts additional to 240....
So 240mts in 24 sec
Then (240+650) in x sec
i.e x=24*890/240===>89
Pravat kumar nayak said:
7 years ago
I think the answer is 65sec.
240m long a pole passes away in 24 sec.
So, Time = distance ÷ speed.
240÷24 = 10 sec.
How long will take to pass a platform 650 m long?
Ans-650÷10 = 65m/s.
240m long a pole passes away in 24 sec.
So, Time = distance ÷ speed.
240÷24 = 10 sec.
How long will take to pass a platform 650 m long?
Ans-650÷10 = 65m/s.
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