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:
598 comments Page 24 of 60.
Suresh said:
1 decade ago
Imagine the pole as a car moving on the train(road) which has a distance of 150m. If the pole(car) takes 9 sec to complete 150m, then what is the speed?
speed of the pole(car)=150m/9sec
= 16.67ms-1
=16.67*(18/5)km/hr
=60km/hr
speed of the pole(car)=150m/9sec
= 16.67ms-1
=16.67*(18/5)km/hr
=60km/hr
Janeth said:
1 decade ago
@Jayath how about -14x/100. I do not understand. Where did you get the number?
Thaya said:
1 decade ago
@ Kalimuthu
This was a nice Explaination
This was a nice Explaination
Shubham said:
1 decade ago
How did you calculate speed ?.
Gokul said:
1 decade ago
Really nice explanation.
Hitesh said:
1 decade ago
When I saw the explanation I was confused that why these gyes used 5/18 to multiply But now I got it. Thanks!
Sudharsan said:
1 decade ago
Let the length of the train be x.
3600/9=6000/x.
X=150m !
3600/9=6000/x.
X=150m !
Satish said:
1 decade ago
Another simple way.
We have to find the length of the train (in mts).
Given in km/Hr ==> 5/18 mts/sec. (1).
Also given time to cross the post i.e. in Sec.
Multiply 1 & sec => (mts/sec) *sec ==mts (ur answer).
We have to find the length of the train (in mts).
Given in km/Hr ==> 5/18 mts/sec. (1).
Also given time to cross the post i.e. in Sec.
Multiply 1 & sec => (mts/sec) *sec ==mts (ur answer).
Lokesh said:
1 decade ago
Local Train Leaves from a station at an intervals of 15 mins at a speed of 16kmph. A man moving from oppsite direction meets the train at an interval of 12 min. find the speed of that man?
Sandeep said:
1 decade ago
Firsst 60 km/sec need to be converted in to meter /second.
It could be by multiply by 60*5/18 and then it multiply by 9 secound and hence anse we get 150 meter.
It could be by multiply by 60*5/18 and then it multiply by 9 secound and hence anse we get 150 meter.
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