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There are 4 women who want to cross a bridge They all begin on the same side If you have 17 minutes to get all of them across to the other side It is night There is one flashlight A maximum of two p?
Wiki User
∙ 16y ago
1 and 2 go and 1 comes back. Total Time= 3 mins then 3 and 4 go and 2 comes back. Total Time in this = 12 mins lastly 1 and 2 go. Total Time: 2 mins Net total time to cross= 3+12+2= 17 mins
Wiki User
∙ 16y ago
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U2 has a concert that starts in 17 minutes and they must all cross a bridge to get there. All four men begin on the same side of the bridge. You must help them across to the other side. It is night. There is one flashlight. A maximum of two people can cross at one time. Any party who crosses, either 1 or 2 people, must have the flashlight with them. The flashlight must be walked back and forth, it cannot be thrown, etc. Each band member walks at a different speed. A pair must walk together at the rate of the slower man's pace: * Bono: - 1 minute to cross * Edge: - 2 minutes to cross * Adam: - 5 minutes to cross * Larry: - 10 minutes to cross For example: if Bono and Larry walk across first, 10 minutes have elapsed when they get to the other side of the bridge. If Larry then returns with the flashlight, a total of 20 minutes have passed and you have failed the mission. Bono and Edge go across in 2 minutes Bono comes back in 1 minute - total is now 3 minutes Larry and Adam go across in 10 minutes - total is now 13 minutes Edge comes back in 2 minutes - total is now 15 minutes Bono and Edge go across in 2 minutes - total time is 17 minutes
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