You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an alternative browser
If a person opens his advent calendar too early, system puts a bounty on that person and that person becomes duellable.
to get 5 pieces of 2x10 paper, you need to do 4 cuttings. so 4*20 = 80 seconds
the answer is ''80 seconds''