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 15 of 59.
Ashok said:
1 decade ago
How to calculate please explain clearly.
= (60 x 5/18) x 9.
And the 5/18 how to multiple.
= (60 x 5/18) x 9.
And the 5/18 how to multiple.
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.
Gowtham reddy said:
1 decade ago
Length of the train = 9*50/3 = 150.
If train crosses pole in 20 seconds.
Length of the train = 20*50/3?
Is the length of the train depend on the time the it crosses the pole? Please answer.
If train crosses pole in 20 seconds.
Length of the train = 20*50/3?
Is the length of the train depend on the time the it crosses the pole? Please answer.
Rubiya said:
1 decade ago
@Gowtham.
If train length is more then it takes more time to cross the pole. If it is small train then it takes less time to cross the pole.
If train length is more then it takes more time to cross the pole. If it is small train then it takes less time to cross the pole.
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.
Dinesh said:
1 decade ago
It has come approximately 150.03 is this correct or exact answer should be 150.
Satyapal khetlan said:
1 decade ago
Given: Train velocity = 60 km/hr;
It's mean that at 1 hr, traveled distance by train, is 60 km;
1 sec. travel distance = 60,000/(3600) m (1 hr = 3600 sec. & 1 km = 1000 m).
So, 9 sec " " = (100/6)*9 m.
= 150 m.
So, 150 m, should be correct answer;
It's mean that at 1 hr, traveled distance by train, is 60 km;
1 sec. travel distance = 60,000/(3600) m (1 hr = 3600 sec. & 1 km = 1000 m).
So, 9 sec " " = (100/6)*9 m.
= 150 m.
So, 150 m, should be correct answer;
Grace said:
1 decade ago
60000 = 3600.
x = 9.
Cross multiply.
= 3600 x/60000*9.
Answer is 150.
x = 9.
Cross multiply.
= 3600 x/60000*9.
Answer is 150.
Arvind_ap said:
1 decade ago
1 km = 1000 meters.
1 hr = 3600 seconds.
1 km/hr = 1000/3600 m/s.
= 10/36 m/s.
= 5/18 m/s.
1 km/hr = 5/18 m/sec.
60 km/hr = 60 x 5/18 m/sec.
= (60 x 5)/18.
= 300/18.
So in 1 sec speed is 16.66.
9 sec = 16.66*9 = 150.
1 hr = 3600 seconds.
1 km/hr = 1000/3600 m/s.
= 10/36 m/s.
= 5/18 m/s.
1 km/hr = 5/18 m/sec.
60 km/hr = 60 x 5/18 m/sec.
= (60 x 5)/18.
= 300/18.
So in 1 sec speed is 16.66.
9 sec = 16.66*9 = 150.
Mohammed asif said:
1 decade ago
Similarly 60 km/hr = 60 x 5/18 m/sec.
Kindly explain how this line how 150 meters came?
Kindly explain how this line how 150 meters came?
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