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 14 of 61.
Rubiya said:
1 decade ago
If train takes 20 seconds means taking more time to cross the pole. It means length of train is more 20*50/3 is 333.3. Therefore here train length increases.
KEITH said:
1 decade ago
So when the questions says find the length of the train, in such case we have to find the distance i.e. by using the distance formula.
D=S*T.
S=D/T.
T=D/S.
D=S*T.
S=D/T.
T=D/S.
Datta pawar said:
10 years ago
First convert value:
60km = 60000mtr.
1 hour = 3600sec.
Calculation.
60000/3600 = 16.666 mtr/sec (this value for only one meter).
So 9 * 16.666 = 150mtr.
60km = 60000mtr.
1 hour = 3600sec.
Calculation.
60000/3600 = 16.666 mtr/sec (this value for only one meter).
So 9 * 16.666 = 150mtr.
Priyanka padhi said:
1 decade ago
Thanks @Sundar. That's was a very nice explanation. For those who are not strong in this section, this is the best way to make them easily understandable.
Asif Bilakhiya said:
8 years ago
Train Speed=60km/hr.
Take 9 seconds to cross the pole.
60km =60000 metres,
1hr=3600 seconds,
Ans=150 metres,
Explanation:
=(9x60000)/(3600),
=150 metres.
Take 9 seconds to cross the pole.
60km =60000 metres,
1hr=3600 seconds,
Ans=150 metres,
Explanation:
=(9x60000)/(3600),
=150 metres.
Hemanth Sairam said:
3 years ago
(60kms / 3600 secs) x 9 secs = 0.15kms
0.15kms in mtrs = 150 mtrs
If the train taken 3600 seconds to travel 60kms,
Then how much for 9 secs?
That’s it.
0.15kms in mtrs = 150 mtrs
If the train taken 3600 seconds to travel 60kms,
Then how much for 9 secs?
That’s it.
(48)
Arun said:
1 decade ago
To remember the formula velocity = d/t (M/s).
d is distance measured in metre(m).
T is the time taken in seconds(s).
So the unit of velocity is (m/s).
d is distance measured in metre(m).
T is the time taken in seconds(s).
So the unit of velocity is (m/s).
Akhil Joseph K J said:
11 months ago
Calculation: 60× (5 / 18)
Simplify:
(60×5)/18
Cancel common factors:
60 and 18 have a common factor of 6:
(10×6)×5/(3×6)
Cancel 6:
(10×5)/3 = 50/3.
Simplify:
(60×5)/18
Cancel common factors:
60 and 18 have a common factor of 6:
(10×6)×5/(3×6)
Cancel 6:
(10×5)/3 = 50/3.
(9)
Sagar said:
9 years ago
1 Hour = 60 Min.
1 Min = 60 Sec.
(Min * Sec = 60 * 60 = 3600).
3600 Sec= 60KM.
9 Sec = ?
60 * 9/3600= 0.15.
So, As per the Option Length is 150 MTR.
1 Min = 60 Sec.
(Min * Sec = 60 * 60 = 3600).
3600 Sec= 60KM.
9 Sec = ?
60 * 9/3600= 0.15.
So, As per the Option Length is 150 MTR.
Suresh said:
10 years ago
10/36 m/s
= 5/18 m/s.
Therefore 1 km/hr = 5/18 m/sec.
Similarly 60 km/hr = 60 x 5/18 m/sec.
I'm not understanding this section, please explain.
= 5/18 m/s.
Therefore 1 km/hr = 5/18 m/sec.
Similarly 60 km/hr = 60 x 5/18 m/sec.
I'm not understanding this section, please explain.
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