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 16 of 59.
Bob Matthew said:
1 decade ago
@Mohammed Asif.
60x5/18=50/3. Now since the train crossed the pole in 9 seconds you multiply 50/3x9=150.
Hope this helps.
60x5/18=50/3. Now since the train crossed the pole in 9 seconds you multiply 50/3x9=150.
Hope this helps.
Peter said:
1 decade ago
Can someone please explain how 60x5/18=50/3?
Simon Newfield said:
1 decade ago
@Peter.
60x5/18 = 50/3 because 60x5/18 = 16.
66666666666667 Now we must convert this to a whole number which is 50. To get 50 you must multiply 16.66666666666667 with 3.
So you write it down as 50/3 because 50/3 equals 16.66666666666667.
60x5/18 = 50/3 because 60x5/18 = 16.
66666666666667 Now we must convert this to a whole number which is 50. To get 50 you must multiply 16.66666666666667 with 3.
So you write it down as 50/3 because 50/3 equals 16.66666666666667.
Tapan Kumar Majhi said:
1 decade ago
60*5/18*9 = 150.
Darshan thakur said:
1 decade ago
60 km/3600 sec = 0.016667.
0.016667 km/sec*9 sec = 0.15 sec.
0.15 sec*1000 meter = 150 meter.
0.016667 km/sec*9 sec = 0.15 sec.
0.15 sec*1000 meter = 150 meter.
MOTHI said:
1 decade ago
Its simple but we should remember how 5/18 exists?
Mark said:
1 decade ago
Length of the train = (Speed x Time) = 50x9 m = 150 m.
Balaram Barik said:
1 decade ago
Very nice way to to learn.
Mahima said:
1 decade ago
Thanks a lot for having such a nice discussion!
Nikita said:
1 decade ago
Please explain the logic for this question.
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