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Walking the Edge Part 2 (Posted on 2006-04-20) Difficulty: 3 of 5
Four farm-hands need to carefully walk the entire perimeter of a large square field to check for signs of infestation. They can each walk separately and any section of edge need only be checked by one person. The field is 200m on an edge and they all start at the same corner. Each person can either walk normally at 2m/sec or walk while checking at only 1m/sec. Any person may cut through part of the field at a normal walking pace. They must all finish at the opposite corner of the field.
What is the shortest time in which they can check the entire edge?

Consider the same problem with a circular field of radius 100m.
How long would this take?

No Solution Yet Submitted by Jer    
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Comments: ( Back to comment list | You must be logged in to post comments.)
re(2): A faster strategy (spoiler) | Comment 5 of 7 |
(In reply to re: A faster strategy (spoiler) by Bob Smith)

Thanks, Bob.  Nice work.
  Posted by Steve Herman on 2006-04-20 14:49:59

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