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:
609 comments Page 12 of 61.
Mahalakshmi Chatrathi said:
2 years ago
60 km/hr = 60 * 1000m/60 * 60 = 50/3m/s.
#speed = distance/time,
1km = 1000m,
1hr = 60m&
1min = 60s.
Then Length(l) = speed * time
l = 50/3 * 9 = 1350/9.
l = 150m.
#speed = distance/time,
1km = 1000m,
1hr = 60m&
1min = 60s.
Then Length(l) = speed * time
l = 50/3 * 9 = 1350/9.
l = 150m.
(51)
Kusuma Kumari Neelam said:
11 months ago
How 5/18 came I will explain.
1 km = 1000 m.
1hr = 60min.
1 min = 60sec.
60min = 3600 sec.
1000/3600 = 5/18.
(Cancelling two zeroes up and down and 2*5 = 10 and 2*18=36).
1 km = 1000 m.
1hr = 60min.
1 min = 60sec.
60min = 3600 sec.
1000/3600 = 5/18.
(Cancelling two zeroes up and down and 2*5 = 10 and 2*18=36).
(24)
Ashura ram said:
2 years ago
60Km/hr.
1km = 1000m
1hr = 60min.
1sec = 60sec.
Got it.
1000 ÷ 60×60.
The Formula is
Distance=speed×Time
Listen here,
D = S×T,
S = 60,
T = 9.
60 × 5 ÷ 18 × 9.
[150m].
1km = 1000m
1hr = 60min.
1sec = 60sec.
Got it.
1000 ÷ 60×60.
The Formula is
Distance=speed×Time
Listen here,
D = S×T,
S = 60,
T = 9.
60 × 5 ÷ 18 × 9.
[150m].
(16)
Mandla kavitha said:
1 decade ago
The speed of train is 60 km/h. Time taken by train is 9 sec.
Then length of train is (d = velocity*time).
(60*5)/18*9 =150 m.
Therefore;the length of train is 150 m.
Then length of train is (d = velocity*time).
(60*5)/18*9 =150 m.
Therefore;the length of train is 150 m.
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:
5 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)
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