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capstinence

Joined: 12 May 2005 Posts: 44 Location: Los Angeles, CA
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Posted: Mon May 16, 2005 2:18 am Post subject: Another Water-Based Puzzle |
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There is a rope ladder hanging over the side of a ship. Each of the rungs of the ladder are a meter apart. The tide rises at the rate of 80 centimeters an hour. How many rungs are covered after four hours?
Last edited by capstinence on Mon May 16, 2005 2:34 pm; edited 1 time in total |
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Posted: Mon May 16, 2005 12:11 pm Post subject: |
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| I need more details, as many as you can give. starting position of the latter is going to matter. Also want to verify that metre = meter = 100 centimeters so that i can exclude any tricks. |
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capstinence

Joined: 12 May 2005 Posts: 44 Location: Los Angeles, CA
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Posted: Mon May 16, 2005 2:34 pm Post subject: |
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| You do not need any more details, but sure - a meter is 100 centimeters (I fixed the spellings). |
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OSUsammy13

Joined: 14 May 2005 Posts: 9
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Posted: Mon May 16, 2005 10:17 pm Post subject: |
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I have looked at this several times and I finally got the right answer (not posted b.c I don’t want to ruin the suspense). This is clever but very strait forward.
Next time someone asks for more details, even if they aren't relevant to finding the answer, it would be a good technique just to make up the details. Word problems are great when you have to decipher the relevant data.
Also - Forum postings should have spell check, engineers - specifically me - are not able to spell. |
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Konquest

Joined: 08 Jun 2005 Posts: 3
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Posted: Wed Jun 08, 2005 5:18 pm Post subject: |
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The answer is pretty straightforward... I'll white it just below, so there is minimal spoilers...
The boat rises with the tide, so the rope ladder is not covered by the tide coming up... _________________ Come to my weblog about Science News and to MZO |
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Michael Chu
Joined: 10 May 2005 Posts: 1257 Location: Santa Clara, CA (USA)
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Posted: Sat Feb 28, 2009 9:22 am Post subject: |
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| But how many rungs were covered to begin with? Without that info, the question is unanswerable. |
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GaryProtein
Joined: 26 Oct 2005 Posts: 514
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Posted: Tue Mar 03, 2009 2:53 am Post subject: |
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| Michael Chu wrote: | | But how many rungs were covered to begin with? Without that info, the question is unanswerable. |
The question could be re-worded, "How many MORE rungs would be covered after four hours." That way, the initial number of rungs does not affect the final answer. |
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Michael Chu
Joined: 10 May 2005 Posts: 1257 Location: Santa Clara, CA (USA)
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Posted: Tue Mar 03, 2009 6:06 am Post subject: |
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| GaryProtein wrote: | | The question could be re-worded, "How many MORE rungs would be covered after four hours." That way, the initial number of rungs does not affect the final answer. |
Ah, yes. Then the answer would be straightforward. |
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