Smirks
02-15-2001, 04:17 PM
Four men are stranded in the woods after a plane crash and are forced to walk their way out. They reach a bridge that must be
crossed for them to escape the forest, and it must be crossed immediately, since some of them require immediate medical
attention. However, it is pitch black night, and the bridge has missing boards, and thus must be crossed with a flashlight. They
have only one flashlight, and the bridge can only take two people at a time, maximum. Because of their various injuries, the speeds
at which they can each cross the bridge are different: one can cross it in 1 minute, one in 2 minutes, one in 5 minutes and one in
10 minutes. They cannot risk throwing the flashlight, so someone must always take it back to the people on the first side
(remember, only max 2 can cross at a time) and if two people are crossing, they must obviously cross at the slower man's pace.
Find a way to get them all across in 17 minutes.
I'll post the solution tomorrow if no one's figured it out by then. ;)
Re-posted from k5
crossed for them to escape the forest, and it must be crossed immediately, since some of them require immediate medical
attention. However, it is pitch black night, and the bridge has missing boards, and thus must be crossed with a flashlight. They
have only one flashlight, and the bridge can only take two people at a time, maximum. Because of their various injuries, the speeds
at which they can each cross the bridge are different: one can cross it in 1 minute, one in 2 minutes, one in 5 minutes and one in
10 minutes. They cannot risk throwing the flashlight, so someone must always take it back to the people on the first side
(remember, only max 2 can cross at a time) and if two people are crossing, they must obviously cross at the slower man's pace.
Find a way to get them all across in 17 minutes.
I'll post the solution tomorrow if no one's figured it out by then. ;)
Re-posted from k5