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:
609 comments Page 29 of 61.
Alpesh said:
8 years ago
1 km = 1000 m,
1 hours= 60 min.
60km=6 hours that 1km=1 hours,
1000/60*9=150,
So, D. 150 is correct.
1 hours= 60 min.
60km=6 hours that 1km=1 hours,
1000/60*9=150,
So, D. 150 is correct.
Sunil sharma said:
8 years ago
Tse speed of train 60km/h,
cross the poll with in 9 sec.
speed of train in 1 mint. = 1km,
Now, speed of train in 1 sec.= 1000/60= 16.67,
Now the length of train= 16.67*9 = 150 m.
cross the poll with in 9 sec.
speed of train in 1 mint. = 1km,
Now, speed of train in 1 sec.= 1000/60= 16.67,
Now the length of train= 16.67*9 = 150 m.
Swapnali said:
8 years ago
Thanks to all for explaining the answer.
Sarang said:
8 years ago
Distance = speed*time.
60*5/18*9,
60*5/2,
300/2 = 150.
60*5/18*9,
60*5/2,
300/2 = 150.
Tarasankar Dey said:
8 years ago
Thanks to all for explaining the answer.
Charmi said:
8 years ago
Out of his total income, Mr. Sharma spends 20% on house rent and 70% of the rest on household expenses. If he saves Rs 1,800 what is his total income (in rupees)?
Please explain the answer.
Please explain the answer.
Alok Dhiman said:
8 years ago
Nice explanation, thanks all.
Santosh said:
8 years ago
Nice explanation, Thanks @Sundar.
Rajneesh said:
8 years ago
Speed = Ditance/Time.
Distance = Speed * Time.
Or lenght = Speed * Time .
=( 60 *5/18) * 9,
= 50/3 * 9,
= 50 * 3 ,
= 150 meter.
Distance = Speed * Time.
Or lenght = Speed * Time .
=( 60 *5/18) * 9,
= 50/3 * 9,
= 50 * 3 ,
= 150 meter.
Vivek said:
8 years ago
We calculated the train length with reference to the pole. But what about the length of the pole. Doesn't it come to picture here?
Please, anyone, clarify it.
Please, anyone, clarify it.
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