I have an 80 in one of these (January, 2012) but I don't know what tips I could really give. The only thing I could say is that I attempted the Mathematics section last because I knew that even with the scarcity of time, I could reduce the number of viable options fairly quickly and from there I had a 50% chance of getting it right. The same could not be said about the Analytical Section, though.

I think the strategy eventually succeeded because I didn't get a single analytical question wrong mainly because I apportioned more than 50% of the total test time to it. The old adage is 'play to your strengths' but instead I played to my weaknesses and it made a difference