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 54 of 59.
Mohan said:
9 months ago
@All.
Here, Speed of the train = 60×(5/18) = 50/3.
Here, Speed of the train = 60×(5/18) = 50/3.
(2)
Akshata said:
9 months ago
60 * 5/18 = 50/3,
Length = speed * time.
l = 50/3 * 9sec= 150 meters.
Length = speed * time.
l = 50/3 * 9sec= 150 meters.
(5)
Shreya shital Upadhye said:
9 months ago
@All.
Here's my explanation.
A train running at a speed of 60 km/h takes 9 seconds to cross an electric pole.
Formula used:
Distance = speed × time.
1 km/h = (5/18) m/sec.
Calculation:
Length of train = distance.
Speed convert km.hr to m/sec.
⇒ 60 × (5/18).
⇒ Speed = 16.67 m/sec.
Distance = 16.67 × 9
⇒ 150 m.
∴ The length of the train is 150 m.
Here's my explanation.
A train running at a speed of 60 km/h takes 9 seconds to cross an electric pole.
Formula used:
Distance = speed × time.
1 km/h = (5/18) m/sec.
Calculation:
Length of train = distance.
Speed convert km.hr to m/sec.
⇒ 60 × (5/18).
⇒ Speed = 16.67 m/sec.
Distance = 16.67 × 9
⇒ 150 m.
∴ The length of the train is 150 m.
(46)
Vaishnavi said:
9 months ago
60 * 9 = 540,
540 * 5/18 = 150.
540 * 5/18 = 150.
(36)
Adeleye Jeremiah said:
8 months ago
Here it is asked for the length of the train and not the distance covered by the train. So anyone explain me this?
(4)
James Gini said:
8 months ago
How we get 50, 3 and 18 in the solution?
(10)
Anjali Singh said:
8 months ago
Should any one tell me how 5/18 came here?
(21)
Kishan bhanja said:
8 months ago
Speed = 60 km/h = 60 * 5/18 = 50/3 m/s.
Time taken = 9 sec.
Length = speed * time = 50/3 * 9 =150 m.
Time taken = 9 sec.
Length = speed * time = 50/3 * 9 =150 m.
(5)
Sandeep said:
8 months ago
Agree, the answer is 150.
(6)
Gowrishankar said:
8 months ago
For km;
a/hr = (a*5%18).
And for m;
a/hr = (a * 18%5).
a/hr = (a*5%18).
And for m;
a/hr = (a * 18%5).
(2)
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