4 friends arrive at a narrow bridge in the dead of a pitch-black night with only one flashlight. Looking at the length of the bridge, they determine that each of them can run across it, but in a certain amount of time... 10 minutes, 5 minutes, 2 minutes, and 1 minute, respectively.
Up to 2 people can cross the bridge at any one time, and one person has to hold the flashlight. If two people cross the bridge, they go at the rate of the slowest person.
Get everyone across the bridge in exactly 17 minutes.
2007-02-12
07:39:34
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10 answers
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asked by
Anonymous
in
Jokes & Riddles