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 Five People on Two Bridges (Posted on 2005-06-25)
In the puzzle Four people on a Bridge we met four people who needed to cross a bridge at night. In this puzzle, there are five people who must cross two sequential bridges at night. As in the original puzzle, there are some hindrances:

The bridges can only support two people crossing at a time.

Each person has a different speed in which they can cross: 10 minutes, 7 minutes, 5 minutes, 2 minutes, and 1 minute.

They have only two flashlights to share among them.

What is the shortest amount of time it will take for all five people to cross both bridges?

 See The Solution Submitted by Erik O. Rating: 3.8000 (5 votes)

 Subject Author Date 10 Minute Solution Rich 2005-09-23 08:03:50 re: Question Erik O. 2005-08-08 19:33:43 re: Solution...? Gururaj 2005-08-03 07:48:30 this too mish 2005-07-23 16:29:03 i think mish 2005-07-23 16:28:13 so much more Tammy Roy 2005-07-12 16:53:18 10 minutes Lacey 2005-07-05 19:19:29 Re: Solution K Sengupta 2005-07-05 05:54:07 ..Solution.. anonymous 2005-07-04 17:15:44 redo coryann 2005-07-01 07:08:29 bridge crossing coryann 2005-07-01 06:52:17 No Subject K Sengupta 2005-07-01 06:42:48 Question Amber 2005-07-01 03:17:38 only 10 mins j441167 2005-06-29 07:21:42 re(2): solution/Mathematical solution of my theory!!/Sorry yall!! Awdreye 2005-06-28 07:50:51 re: solution Awdreye 2005-06-28 07:25:31 solution Awdreye 2005-06-28 07:20:57 the answer? Katie 2005-06-28 02:53:12 re(4): Fastest solution yet? correct? john 2005-06-27 20:58:17 re(3): Fastest solution yet? correct? Erik O. 2005-06-27 20:37:59 re(4): Fastest solution yet? correct? john 2005-06-27 20:28:16 re(3): Fastest solution yet? correct? john 2005-06-27 20:26:09 re(3): Fastest solution yet? correct? Tristan 2005-06-27 20:24:47 re(2): Fastest solution yet? correct? john 2005-06-27 20:13:45 re: Fastest solution yet? correct? Hugo 2005-06-27 19:45:22 re: Fastest solution yet? correct? Hugo 2005-06-27 19:45:21 Fastest solution yet? correct? john 2005-06-27 19:12:32 re: answer David Grenier 2005-06-26 02:10:22 my solution David Grenier 2005-06-26 02:09:24 answer j441167 2005-06-26 01:15:31 Small request Tristan 2005-06-25 23:00:12 1 less minute Tristan 2005-06-25 22:52:53 Solution...? Cougar Draven 2005-06-25 22:50:40 re: 3 less TomM 2005-06-25 21:29:30 re: answer billiardgirlscout 2005-06-25 20:11:56 3 less MathManiac 2005-06-25 18:11:42 Not sure if this is the best... Ken Haley 2005-06-25 17:03:47 re(2): Answer Ken Haley 2005-06-25 15:48:16 re: Answer MathManiac 2005-06-25 04:34:33 Answer Sachin 2005-06-25 03:21:15

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