{{
`${userDetail.user.displayName}${userDetail.user.cachedBungieGlobalDisplayNameCode ? `#${standardizeBungieGlobalCode(userDetail.user.cachedBungieGlobalDisplayNameCode)}` : ""}`}}
{{getUserClans()}}
originally posted in:Devilwolf
View Entire Topic
8/9/2014 5:45:38 AM
17
Destiny Math Teaser
A Vandal can cross a bridge in 10 minutes. A Captain can cross the same bridge in 5 minutes. A Dreg can cross the bridge in 2 minutes and it only takes the Shank 1 minute to cross the bridge. All four are on one side of the bridge and can only cross NO MORE THAN two at a time. They are crossing at night so they need a flashlight. Each time two cross someone has to go back with the flashlight. They have 17 minutes to cross the Bridge before the Guardian come to kill them. In what order do they cross?
There is one and only one way to do this.
[i]Proud member of the clan causing a sensation [url=http://www.bungie.net/en/Forum/Post/67123219/0/0]
THE GRIMGUARD[/url] .[/i]
English
#Destiny
-
Edited by Encrypted Engram: 8/9/2014 9:23:15 PMI feel like a lot of you are missing a key point. the 2 on the bridge at any given time must be together because otherwise, what would the point of the flashlight be? Also, the shank can fly, so it is never really ON the bridge. So here's my answer. The Shank holds the flashlight throughout the entire event. The Captain and the Vandal go first, with the shank following with the light. 10 minutes later the captain and vandal are on the other side. The shank turns around, and it reaches the waiting dreg at 11 minute mark. The shank and the dreg then cross, finishing in 13 minutes EDIT: Alternately, If my shank-is-a-flying-unit loophole is invalid: The dreg and the shank go first, the the shank goes back with the light. 3 minute mark. The shank and the captain go next, the shank goes back with the light. 9 minute mark. The shank and the vandal cross the bridge. They don;t make it to side B until 19 minutes, but they aren't at side A when the guardian arrives there at the 17 minute mark, so they all survive.
