A group of 5 travelers have become turned around and lost in a cave system with only a single torch to help guide them through. They know someone at some point in time has been through there before when they come to a rickety rope and plank bridge. It is the only way for them to go as the water level is rising behind them with the tide. Only two of them can cross the old bridge at a time and one person must always be carrying the torch during each and every crossing so they can keep an eye on their every step. The people waiting on either end will need to wait in darkness. The water level is rising behind them and they will be submerged in a little over 16 minutes. What is the order in which all 5 people can cross safely within the time limit if the following conditions are true: Gran, who is the slowest, takes 10 minutes to get across the bridge. Sandy can make it in 5 minutes. Thunk takes 2 minutes, Guy takes 1 minute, and Eep takes 30 seconds.