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Spider Strolls (Posted on 2006-07-12) Difficulty: 3 of 5
A fifteen feet long ladder is placed across a street such that while its base is at one edge of the street its top rests against the opposite wall at a height of nine feet. Similarly, another ladder, twenty feet long, is placed resting across the other side-wall so that the two ladders cross each other. A spider wishing to cross the street, climbs up one ladder till it gets to the meeting point; thereafter, it climbs down the other.

How long will the spider take to accomplish the crossing assuming that he covers a foot in ten seconds?

No Solution Yet Submitted by Salil    
Rating: 2.0000 (1 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
The Spider WalkRichard Z2006-07-19 00:45:55
I used the 3-4-5 as wellDave Soderstrom2006-07-12 20:11:52
re: 7 legs for an 8 legged walkJyqm2006-07-12 16:55:03
Solution7 legs for an 8 legged walkDej Mar2006-07-12 15:57:20
Solution3 X 4 X 5 solutionPatrick2006-07-12 13:30:58
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