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:
587 comments Page 43 of 59.

CM_07* said:   9 years ago
Thank you all very nice explanation to understand.

MNS said:   9 years ago
One more time explain me.

I cannot understand this step (6 * (5/18) * 9) = 150. Pease explains briefly.

Asuthosh said:   9 years ago
Well explained. Thank you all.

Hari mahe said:   9 years ago
That is (60 * (5/18) * 9) = 150.

Actually, the train speed is given in 60km/hour. We just convert that into m/sec as follows:

60km/hour = 60 * (5/18)m/sec that is equal to 150.

Ayushi said:   9 years ago
@All.

Very good explanation thanks a lot for helping us.

Suraj said:   9 years ago
Why it is divided by 5/18?

Sam prakash shine said:   9 years ago
@Suraj.

5/18 is for converting the km/hour into m/sec.

Manjesh said:   9 years ago
60 * 5/18 = 16.6666667. Then, Why it is divided by 50/3?

Siva said:   9 years ago
Can anybody tell me clearly how 50/3 m/sec came?

Pratiksha said:   9 years ago
It's really a nice explanation. It really helpful for beginners. I understood easily. Thank you all.


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