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#1 wolfgang

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Posted 13 September 2011 - 10:57 PM

I was sitting in a subway station No. 12(toatal stations are 24).
On this line are several trains transporting passengers from staion(No. 1 ) till the end station( No. 24),then each train will continue the journey from side to side(both sides are connected together at each end).I noticed that after each 4 Minutes a train arrives this station from left side toward the right side,one minute later another train arrives the station but to the opposit direction,and so on.
If each train stays in each station exactly one minute( notice that the train at each end will make a curve and return back to that staion,just like a circle).
Howmany trains are there on this line?
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#2 bonanova

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Posted 13 September 2011 - 11:24 PM

Spoiler for Looks like

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The greatest challenge to any thinker is stating the problem in a way that will allow a solution.
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#3 amonkkilla

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Posted 14 September 2011 - 01:17 AM

Spoiler for hmmm

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#4 thoughtfulfellow

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Posted 14 September 2011 - 06:14 AM

Spoiler for Well - some thoughts

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#5 swapnil

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Posted 14 September 2011 - 06:42 AM

Spoiler for My Solution

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#6 thoughtfulfellow

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Posted 14 September 2011 - 07:14 AM

Spoiler for By my calculation

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#7 bhramarraj

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Posted 14 September 2011 - 10:58 AM

Spoiler for trains reaching the station every 4 minutes.

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#8 wolfgang

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Posted 14 September 2011 - 01:56 PM

Spoiler for Looks like

Thanks...I am very proud when I see you joining my (stupid) puzzles.
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#9 wolfgang

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Posted 14 September 2011 - 02:01 PM

Spoiler for Well - some thoughts

The stations are equally spaced, all trains have the same speed,and the distance between any two trains is also equal.
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#10 Suwandy_wu

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Posted 14 September 2011 - 02:04 PM

Spoiler for hmm..

Edited by Suwandy_wu, 14 September 2011 - 02:07 PM.

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