Where can I find out what are the earnings of Marriott Hotels in Australia?

I would contact Marriott Hotels International directly via their investor relations department and look for their annual financial reports where info might be broken out by country. I imagine if you call them directly, someone there can direct you right to the information you need, including more up-to-date quarterly reports. No doubt they can give you contacts to the management at Marriot's Australia headquarters for more detailed info that might be helpful.

Here's a few places to start your search:

http://investor.shareholder.com/mar/results.cfm

http://investor.shareholder.com/mar/contactus.cfm

http://investor.shareholder.com/mar/releases.cfm

Another couple of places to look if you prefer could be a full service brokerage firm and a well-equipped local library. In each case, call first so they can tell you if they have the information or not that you're looking for. Two services that good libraries subscribe to that I've used often in the past is Moody's and the Value Line Investment Survey. You'd probably get the most complete info directly from the company but when investing, I always preferred third party info and opinion.

Good luck with your project. :-)