Don't read this unless you've taken the test (NitrousBum: Go ahead and read it): Actually, there was another one in there that had the ratios reversed (you should have noticed it! =P), it seemed a lot like some trick questions designed to make your brain do some division. Anyway, I submit this post and the post above this for deletion; giving away answers is not the intent of these posts.
Just a quick note to say that the survey is closed cos i have all the people that i need. Thanks for your support!!!