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?
120 metres
180 metres
324 metres
150 metres
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 28 of 61.

Akshata said:   1 year ago
60 * 5/18 = 50/3,
Length = speed * time.
l = 50/3 * 9sec= 150 meters.
(5)

Tripta said:   10 years ago
1 km = 1000.

1 hr = 3600 s.

Why it is changed into 10/36 and 5/18?

Gnanavel said:   9 years ago
If they asking to find the length of the pole, then how to solve it?

Abhishek said:   2 years ago
60 km/h.

1 km/minutes.
1000/60 = 16.6666/sec
16.6666*9 = 150meter.
(77)

Giri said:   1 decade ago
1 km = 1000 meters.

1 hr = 3600 seconds.

1 km/hr = 1000/3600 m/s.

Anu said:   1 decade ago
Why is the length of train calculated with the formula speed*time?

Sonali said:   9 years ago
@Latha, Please explain the solution.

(sqrt(3N))^3/2 = 90.
N = 10.

Hanumantha reddy said:   1 decade ago
Hi good morning this problem am not understand please explain me.

Bangaru said:   1 decade ago
@Divya.

Can you explain the problem which was mentioned by you ?

Kishan said:   1 decade ago
Similarly,

Speed = [60*5/18]m/sec=50/3 m/sec.

50/3*9 = 150mtrs.


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