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:
613 comments Page 2 of 62.
RAMAN said:
3 months ago
Here is the answer for 5/18.
Conversion of km/hr to m/s.
Let.
Km = 1000 m.
hr = 3600 sec.
So,
Km/hr = 1000/3600 (m/s),
Both cancell with 200,
So then. 1000/3600 = 5/18.
Because 200 has the greatest common divisor.
Conversion of km/hr to m/s.
Let.
Km = 1000 m.
hr = 3600 sec.
So,
Km/hr = 1000/3600 (m/s),
Both cancell with 200,
So then. 1000/3600 = 5/18.
Because 200 has the greatest common divisor.
(34)
Lokesh said:
3 months ago
Speed = 60 km/hr.
Convert to m/s: 60 × 1000.
3600 = 16.67 m/s
Time to cross the pole = 9 s
Length = Speed × Time
= 16.67 × 9
= 150 m.
Convert to m/s: 60 × 1000.
3600 = 16.67 m/s
Time to cross the pole = 9 s
Length = Speed × Time
= 16.67 × 9
= 150 m.
(22)
Akshay Reddy said:
3 months ago
In there 1km = 1000m,
and 1hr = 3600sec.
Now we should use 1km/hr = 1000/3600;
In the above line, two zeroes are cancelled.
Then 10/36, and we use division, then it comes to 5/18.
and 1hr = 3600sec.
Now we should use 1km/hr = 1000/3600;
In the above line, two zeroes are cancelled.
Then 10/36, and we use division, then it comes to 5/18.
(17)
LINGAMPALLI SRINIVAS said:
3 months ago
How can we take 5/18? Please explain.
(8)
SSHA said:
3 months ago
Why should I take 5/18, can you please explain that?
(5)
Mohammad jabir said:
3 months ago
Please explain this problem because I can't understand this.
(6)
Rithiksha said:
3 months ago
Please explain me.
(3)
Samyyyy said:
3 months ago
@All.
When we are converting km to meters, we have to take 5/18 as the options given in meters. So we have to do it.
When we are converting km to meters, we have to take 5/18 as the options given in meters. So we have to do it.
(7)
MANDARA GADADE KN said:
4 months ago
How we can take 5/18? Please explain.
(12)
Maha said:
4 months ago
Why are you use 5/18? Please explain.
(40)
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