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Old 10-24-2007   #1
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Help please? The only thing I've gotten so far is 19 minutes.Bridge Over Troubled Students:There are 4 men who want to cross a bridge. They all begin on thesame side. You have 17 minutes to get all of them across to the otherside. It is night. There is one flashlight. A maximum of two peoplecan cross at one time. Any party who crosses, either 1 or 2 people,must have the flashlight with them. The flashlight must be walkedback and forth, it cannot be thrown, etc. Each man walks at a differentspeed. A pair must walk together at the rate of the slower man Man 1: 1 minute to cross Man 2: 2 minutes to cross Man 3: 5 minutes to cross Man 4: 10 minutes to crossFor example if Man 1 and Man 4 walk across first, 10 Minutes haveelapsed when they get to the other side of the bridge. If Man 4returns with the flashlight, a total of 20 minutes have passed, andyou have failed the mission.
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