Lol yeah I realise you're year 11's, so I figured you didn't spend that much time on each subject! But seeing as though I did a year 12 subject last year like you two are doing now, I just want to say that you shouldn't put too many hours into the one subject. I can understand the thought that doing more hours will generate success, and that's true to a certain extent. But from my experience, in my year 12 subject, and in other subjects that my mates did (like biology), the people that did the best were people that put in work, but not a ridiculous amount. They remained on top of things during the year, and to remain on top of things all that is required is a maximum of 30 minutes of study a night...not saying that I personally did that much, but that's what I'd call the maximum. The others who did put in uncountable numbers of hours however, did not do as well as the others who did less. Anyway that's just my advice, not saying you have to follow or believe it!