How do you calculate hotel/ bed & breakfast occupancy rates and profit margins from the number of rooms?

What I would like to know is how exactly does a hotel or bed & breakfast calculate its profit margin in regard to its occupancy rates. I would also appreciate any links to websites concerning this kind of info.Thanx.

this link has good information for all types of businesses:

http://www.entrepreneur.com/startingabusiness/businessideas/startupkits/article83704.html

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