Can you solve the bridge riddle? – Alex Gendler

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Taking that internship in a remote mountain lab might not have been the best idea. Pulling that lever with the skull symbol just to see what it did probably wasn’t so smart either. But now is not the time for regrets because you need to get away from these mutant zombies…fast. Can you use math to get you and your friends over the bridge before the zombies arrive? Alex Gendler shows how.

Lesson by Alex Gendler, animation by Artrake Studio.

5 Comments

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  2. oh, what I did was this: You and Professor cross first taking 10 minutes, 7 minutes left, then You go back taking one minute so 6 minutes left, then you take the Janitor so 3 minutes left, then you cross back over the bridge 2 minutes left, then you and the Assistant both cross since she takes 2 minutes and you slow down for her and you get across safely in the nick of time.

  3. the old professor managed to calculate how much time do the zombies arrive before them but cant calculate the least time it would take for them all to cross the bridge. bummer

  4. Why not put the lantern in the midle while 2 first people crossing and 2 slowest going first, the second slowest finishes then the 3th slowest goes, then, the last person goes ant takes lantern with him, less time consumed and more time to cut the rope, why someone needs to be running back and forth with the lantern? Just put it in the middle by the second slowest person

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