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:
619 comments Page 42 of 62.
Muhammad Abdurrehman said:
10 years ago
Solution:
All Quantities are given in question.
Note: Answer is in the meter so will convert km/hr to m/s.
Given Data:
1. Speed = 60km/hr = 60*(1000/3600) = 100/6 m/s = 16.666m/s.
2. Time = 9 sec.
Sol: We know that speed = distance/ time.
Speed(s) = v/t or v = s * t = 16.666m/sec*9 sec.
So, s = 150 meters.
All Quantities are given in question.
Note: Answer is in the meter so will convert km/hr to m/s.
Given Data:
1. Speed = 60km/hr = 60*(1000/3600) = 100/6 m/s = 16.666m/s.
2. Time = 9 sec.
Sol: We know that speed = distance/ time.
Speed(s) = v/t or v = s * t = 16.666m/sec*9 sec.
So, s = 150 meters.
Manoar Biswas said:
10 years ago
Now I understand. Thank you sir.
Sada said:
10 years ago
@Muhammad.
This explanation is good and useful for beginners. Thankyou.
This explanation is good and useful for beginners. Thankyou.
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.
Makvana Disha said:
10 years ago
@Vishnu.
The value of N = 134.44.
The value of N = 134.44.
Shri said:
10 years ago
@Kalimuthu.
Short, simple and logically understandable answer .
Short, simple and logically understandable answer .
Afzal said:
10 years ago
Hello @Sundar,
I'm not understanding this 1 km/hr = 1000/3600 m/s.
But.
How come this?
= 10/36 m/s.
= 5/18 m/s.
Please explain.
I'm not understanding this 1 km/hr = 1000/3600 m/s.
But.
How come this?
= 10/36 m/s.
= 5/18 m/s.
Please explain.
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.
Gnanavel said:
10 years ago
If they asking to find the length of the pole, then how to solve it?
Vikas prasad said:
10 years ago
I can't solve the problem and also can't read it properly what can I do?
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