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Dances with Wolves (Posted on 2002-12-22) Difficulty: 1 of 5
Dances runs around a track in sixty seconds. Wolves, running in the opposite direction around the track, meets Dances every twenty seconds. How long does it take for Wolves to run around the track?

-Problem modified from UNL Math Day

See The Solution Submitted by cges    
Rating: 2.4167 (12 votes)

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Some Thoughts Slightly different approach | Comment 10 of 13 |

Dances plus wolves (opposite direction) complete a lap in one third the time of dances alone, and hence run three times faster.

Therefore wolves run twice as fast as dances, and complete a lap in half the time: 30 seconds.


  Posted by Nick Hobson on 2004-06-13 11:19:44
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