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
if it takes dances 60 secs/lap then he has gone 1/3 of a lap in twenty seconds, wolves has done 2/3 lap in the opposite direction. By comparison wolves is going twice the speed of dances and will cover the lap in half the time - 30 seconds/lap
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Posted by Paul
on 2004-11-30 15:54:36 |
Here's my solution
