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:
619 comments Page 23 of 62.

Sairaj said:   2 decades ago
1 mile=1.61 km

Reddy said:   2 decades ago
@Rita

Please explain this problem I am not understand.

Hanumantha reddy said:   2 decades ago
Hi good morning this problem am not understand please explain me.

Contactjerin said:   2 decades ago
Any one know the how many feet is one meter?

Sundar said:   2 decades ago
@Contactjerin

Feet to Meter conversion: 1 feet = 0.3048 meter
Meter to Feet conversion: 1 meter = 3.28083 feet

This is what I mentioned already in this discussion.

You can easily find the answer for your question that is:

3.28083 feet = 1 meter.

Suganthan.m said:   2 decades ago
From the question we can predict speed= distance/hour
((by speed=60 km/hr)note the km/hr)
As to calculate for 9 sec I am converting the whole things to seconds
(i.e.)speed=60000/3600=16.666666(remember this is for one second)

therefore for 9 seconds
16.666666*9= 150

Vishnu said:   2 decades ago
(sqrt(3N))^3/2 = 90

How to find N value from this problem?

UMESH said:   1 decade ago
Hi Kalimuthu great explanation.

Palanivel said:   1 decade ago
Hi i am palanivel i got ur explanation for above question..thak you..

Joseph said:   1 decade ago
First convert the km into metres 60km will bcome 60000 metres then divide 60000 with 1 hour that is 60,60000/60 this will give us the speed of the train in mins n then 1000 with 60(to convert the speed in seconds)then multiply the ans with 9 seconds.ie 16.66*9 will give us 150 :)


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