Your sister, mother, grandmother and you are going to be killed by zombies in 17 minutes. There is a bridge in front of you, that leads to an island where you can be safe, the problem is that you need a lamp for crossing, and there's only one. *The bridge can handle just 2 persons. *EVERYONE has to pass. *You NEED the lamp. *The velocity of a couple is determined by the SLOWEST. The crossing velocity of each member is: Grandmother: 10 minutes Mother: 5 minutes Sister: 2 minutes You: 1 minute
Determine the order in which your family shall pass for surviving! .