Aptitude - Problems on Trains - Discussion
Discussion Forum : Problems on Trains - General Questions (Q.No. 1)
1.
A train running at the speed of 60 km/hr crosses a pole in 9 seconds. What is the length of the train?
Answer: Option
Explanation:
| Speed = |  |
60 x | 5 |  m/sec |
= | |
50 | m/sec. |
| 18 | 3 |
Length of the train = (Speed x Time).
 Length of the train = |
|
50 | x 9 | m = 150 m. |
| 3 |
Discussion:
587 comments Page 12 of 59.
MATTA.SRINUVASRAO said:
1 decade ago
I'M UNDERSTAND SIR BUT I'm suppose to be confusing to seeing above following questions so I'm kindly requesting you to explain the solutions above question, thank you.
PANKAJ KUMAR said:
1 decade ago
Hi @Apurva.
You are saying that 60km/hr.
1 km = 1000 m.
1 hr = 60 min.
Therefore 60km/60min.
How 60km/60 min.
What you want to explain it? I'm not understanding.
You are saying that 60km/hr.
1 km = 1000 m.
1 hr = 60 min.
Therefore 60km/60min.
How 60km/60 min.
What you want to explain it? I'm not understanding.
Sathiyaraj said:
9 years ago
Cross 60000(60 km) meters in 3600 seconds(1 hour).
60,000 m => 3600 seconds,
100 m => 6 seconds,
Hence 3 sec => 50 m,
So, 100 + 50 mts = 150 m (6 + 3 = 9 seconds).
60,000 m => 3600 seconds,
100 m => 6 seconds,
Hence 3 sec => 50 m,
So, 100 + 50 mts = 150 m (6 + 3 = 9 seconds).
RAMPAVI said:
7 years ago
Here we convert the 1 hour into seconds and the given time is 9 seconds.
We convert the kilometres into meters then we can easily solve it.
3600/9 = 6000/x.
x = 150m.
We convert the kilometres into meters then we can easily solve it.
3600/9 = 6000/x.
x = 150m.
Rashmi said:
4 years ago
60km = 1hr
60km = 60min
so 1km = 1min.
1km = 1000metres, 1min=60sec
then 1000 = 60 sec
cancelation,
For 100=6,
50=3,
150=9,
Here 9 sec 150 metres.
60km = 60min
so 1km = 1min.
1km = 1000metres, 1min=60sec
then 1000 = 60 sec
cancelation,
For 100=6,
50=3,
150=9,
Here 9 sec 150 metres.
Santoshi Nayak said:
2 years ago
To find the length we can use the formula is length = speed * time.
Speed = 60km/hr
Pole = 9second
The length of the train would be 60*9/3600 = 0.15km or 150 meters.
Speed = 60km/hr
Pole = 9second
The length of the train would be 60*9/3600 = 0.15km or 150 meters.
(17)
Siddhesh Anavkar said:
8 years ago
Formula.
1. Distance = speed * time
2. km/hr --> m/sec conversion
For ex. convert 90 km/hr to m/sec
Solution:-
90 km/1 hr = 90,000 m/3600 sec
= 25 m/sec.
1. Distance = speed * time
2. km/hr --> m/sec conversion
For ex. convert 90 km/hr to m/sec
Solution:-
90 km/1 hr = 90,000 m/3600 sec
= 25 m/sec.
Subhasri said:
1 decade ago
Another easy method for solving it.
In 3600 sec the train go 60 km.
In 1 sec the train will go 1/60km.
Then in 9 sec it will go (1/60) *9 = .15km = 150 meter.
In 3600 sec the train go 60 km.
In 1 sec the train will go 1/60km.
Then in 9 sec it will go (1/60) *9 = .15km = 150 meter.
Sandeep said:
1 decade ago
Firsst 60 km/sec need to be converted in to meter /second.
It could be by multiply by 60*5/18 and then it multiply by 9 secound and hence anse we get 150 meter.
It could be by multiply by 60*5/18 and then it multiply by 9 secound and hence anse we get 150 meter.
Vikas said:
8 years ago
If you divide 1000/3600 = 0.27.
But it is showing 10/36 after that 5/18.
I am not understanding how it came 10/36 then 5/18?
Please help me by explaining it.
But it is showing 10/36 after that 5/18.
I am not understanding how it came 10/36 then 5/18?
Please help me by explaining it.
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