Challenging Brain Teaser?

  • Thread starter Thread starter -BrownEyedBeauty-
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-BrownEyedBeauty-

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Four people need to cross an uphill bridge late at night and only have 1 flashlight. Two people can be on the bridge at any given time, but anyone crossing the bridge must have the flashlight with them. It takes each person a different amount of time to cross going uphill, and takes each of them just 1 minute to cross returning downhill. If two people are traveling with the flashlight uphill, they travel at the speed of the slower person. Person A can cross uphill in 1 minute, person B in2 minutes, person C in 13 minutes, and person D in 19 minutes. Find a way to get everyone across in just 25 minutes.
 
A and B go over---2mins
A come back----3mins
A and C go over---16mins
A come back---17mins
A and D go over----36mins

close as i can get unless the chuck the flashlight
 
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