Never thought there would actually be a mathematical answer to this, but....
for those who've always wanted to know how you can fairly divide a sandwich between three persons!
The first link is the question and the second provides the answer.
http://math.stackexchange.com/questions/637728/splitting-a-sandwich-and-not-feeling-deceived
https://en.wikipedia.org/wiki/Selfridge%E2%80%93Conway_discrete_procedure