Mack needs to cross a bridge that is being guarded by a troll. This troll won’t allow anyone to cross and tells them to go back in the direction they cam e from. It will take Mck NaMack atelier least 4 minutes to cross the bridge BUT the troll comes outevery 3 minutes tocheck that no little children are crossing his bridge! Mack thinks that he is very clever and that he has solved how to get to the other side of the bridge without being caught by the troll. how?