Tuesday
April 28, 2015

Homework Help: math

Posted by jake on Tuesday, March 9, 2010 at 8:39pm.

4 people need to cross a brige but it is dark outside and they only have one flashlight and only 2 people can cross at one time. doris takes 10 minutes bob takes 5 minutes jack takes 2 minutes and annie takes 1 minute. how can thay get across in 17 minutes. someone has to go back with the flashlight.

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