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:
597 comments Page 5 of 60.
Shreya shital Upadhye said:
12 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)
Sarita said:
3 years ago
Why do we use 5/18? Can anybody explain me? please.
(44)
Raushan kumar said:
2 years ago
Given, that.
Speed=60 km/hr.
Time=9 sec.
Time is given in sec so we convert the given speed km/hr into sec.
So, 60*5/18 m/sec=50/3 m/sec.
Therefore, the length of the train is =>speed * time.
50/3*9= 150 m/s.
Speed=60 km/hr.
Time=9 sec.
Time is given in sec so we convert the given speed km/hr into sec.
So, 60*5/18 m/sec=50/3 m/sec.
Therefore, the length of the train is =>speed * time.
50/3*9= 150 m/s.
(42)
Edward Casandra oghenekaro said:
2 years ago
Here, how did you get the 50? Anyone, please explain to me.
(42)
Neha kumari said:
1 year ago
For converting km to m 60*1000 = 60000m.
For converting hrs. to sec. 60 * 60 = 3600sec.
60000/3600 = 16.6666.
16.666 * 9 = 150.
For converting hrs. to sec. 60 * 60 = 3600sec.
60000/3600 = 16.6666.
16.666 * 9 = 150.
(42)
Sneha said:
6 months ago
How did you calculate 5/18? Please explain to me.
(41)
Gauri Bhalerao said:
1 year ago
How 5/18 came, can anyone explain me? Please.
(40)
Faheem said:
3 years ago
How did the 5/18 came? Can anyone explain it?
(38)
Saipriya said:
11 months ago
1km = 1000m,
1hr = 3600s.
1km/hr = 1000/3600.
= 5/18 m/s.
1hr = 3600s.
1km/hr = 1000/3600.
= 5/18 m/s.
(38)
Naldo said:
2 years ago
How do we get 50/3? please explain.
(37)
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