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:
586 comments Page 4 of 59.
Kaustubh Kishor Salunkhe said:
6 months ago
@All Everyone,
For the people who asking how 5/18 came?
It is used to convert KMPH to MPS
Let me explain how and when to use it. The hint is in the Answers we can see 60 km/hr and answers in Meters.
If it's Vise Versa we will use 18/5 to get the answer in Kmph.
For the people who asking how 5/18 came?
It is used to convert KMPH to MPS
Let me explain how and when to use it. The hint is in the Answers we can see 60 km/hr and answers in Meters.
If it's Vise Versa we will use 18/5 to get the answer in Kmph.
(6)
Henry Pautu said:
6 months ago
To find the length of the train, we use the formula is Distance=Speed×Time.
Given:
Speed of the train = 60 km/hr.
Time taken to cross the pole = 9 seconds.
Since 1 km/hr = (5/18) m/s, we convert:
60 X 5 / 18 = 300 / 18 = 16.67 m/s.
Since the train crosses a pole (which means the length of the train itself is covered in the given time):
Length of train = 16.67 × 9 = 150 meters.
Given:
Speed of the train = 60 km/hr.
Time taken to cross the pole = 9 seconds.
Since 1 km/hr = (5/18) m/s, we convert:
60 X 5 / 18 = 300 / 18 = 16.67 m/s.
Since the train crosses a pole (which means the length of the train itself is covered in the given time):
Length of train = 16.67 × 9 = 150 meters.
(13)
Harshitha said:
6 months ago
How 5/18 is calculated? please explain it.
(29)
Suraj balaji kshirsagar said:
7 months ago
150 is the correct answer.
(9)
Pallavi Ananda Morbale said:
7 months ago
Very Good, Thanks everyone for explaining the answer.
(2)
PRASHANTH said:
7 months ago
I still don't understand. How 5/18 came?
Please explain to me.
Please explain to me.
(35)
Hemanth said:
7 months ago
@All.
Let me explain in the short.
1st look at the options is in meters so 1 kms = 1000m.
1000/60 (speed) =16.66666 per sec,
Length = speed × time.
So, the answer is 16.6666 × 9 = 150m.
Let me explain in the short.
1st look at the options is in meters so 1 kms = 1000m.
1000/60 (speed) =16.66666 per sec,
Length = speed × time.
So, the answer is 16.6666 × 9 = 150m.
(148)
Jyothi said:
7 months ago
Conversion formula for km/hr into m/sec = 5/18.
Conversion formula for m/sec into k/m = 18/5.
Conversion formula for m/sec into k/m = 18/5.
(34)
Suriya said:
7 months ago
@Revanth.
We need to cover kmph to mtps 5/18 mtps to kmph 18/5.
We need to cover kmph to mtps 5/18 mtps to kmph 18/5.
(4)
Revanth said:
7 months ago
How 5%18 came? could anyone please explain?
(9)
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