A couple of your comments tell me that you would benefit from learning more about how the test is scored.
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I am familier with most of concept but let me tell you I was totally blanked on at least 4-5 problems and did not have any clue how to proceed with them.
I see at least one or two quant questions on which I feel the same way... and I score in the 99th percentile. It doesn't matter how good you get - they can give you something that makes you think, "Huh???" :)
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One additional data I want to provide is my accuracy in OG Verbal 2 was 75%+ in CR and RC and about 55-60% in SC.
Discussing accuracy without also discussing both timing and difficulty level tells us almost nothing about your actual skills. Many people make the mistake of prioritizing accuracy over timing - and that makes it harder to maximize your real test score.
Read this:
http://www.manhattangmat.com/blog/index ... to-win-it/Then log into your MGMAT account and read the Scoring section of our free e-book The GMAT Uncovered. Then come back here and tell me what you've learned from your reading. :)
It's possible to improve 70-80 points in roughly 3 months, yes, though obviously not everyone achieves that. You're asking good questions to start and you want to make sure as you go along that you're giving yourself access to helpful resources, etc. That might mean things like these forums, certain books or other resources, a study group (if you can find someone who's strong in verbal and needs help with quant, that'd be ideal), possibly even tutoring (that's very expensive but can also be quite valuable).
For quant, you're at the level where you would benefit from our Advanced Quant strategy guide - it was written for people who are in the 70-80 range right now (percentile) and are trying to push to 90+. It focuses on teaching you
how to think your way through the complex problems they toss at us at the higher end, which is what Ron was talking about. (In other words, the book doesn't say "here, memorize these formulas and rules" - it's not Advanced Quant in that sense. Rather, it focuses on how to figure out what they're talking about when they wording of the problems starts getting really hard.)
Back to SC. Part of that is going to be going back over our SC Strategy Guide. (You don't mention whether you have it, but it seems like almost everyone has that book, so I'll assume you do too :) If you haven't already, make some flashcards with the rules you're still struggling to learn. In particular, I like flashcards with this setup:
[one side] If I see _____
[other side] I will think / do ______
And this: go back over some old OG problems you've already done (start with easier ones). Don't read the original sentence - cover it up. Compare the differences you find in the answers and try to answer the question only based on the differences. Also articulate very clearly: this difference means they're probably testing XYZ. And articulate HOW you know that. You often won't be able to answer the question completely (since you're not reading the original sentence), but go as far as you can. Then ask yourself: what else would it be useful to know / find in order to finish answering this? Then go see whether you can find those things in the non-underlined portions that you didn't read at first.
You also mention struggling with meaning. Have you read these articles? They'll provide you a good starting point for that issue.
http://www.manhattangmat.com/blog/index ... orrection/http://www.manhattangmat.com/blog/index ... on-part-2/http://www.manhattangmat.com/blog/index ... h-meaning/
