Hi Jacopo1990,
You've asked a rather broad question, so I'll start broad - yes, it is possible to improve from a 550 to 750 in 77 days.
The problem with that type of thinking is that it focuses on the amount of available calendar time and the amount of study time that you can put into the process. Unfortunately, those are NOT the only factors when it comes to training to score at a high level on the GMAT.
Here are some of the other factors that will impact your studies (in no particular order):
-The proper study materials
-The proper guidance
-Your ability to learn new concepts/tactics, remember them, perform them correctly and THEN perform them correctly under time pressure
-Your focus on accuracy, organization, learning from your mistakes (so that you can eliminate those mistakes from your process)
-Realistic study that matches the parameters of Test Day.
-A calm personality that isn't bogged down by fear, doubt, negativity, etc.
-The proper amount of time
A 700+ score represents the 90th percentile, meaning that 90% of Test Takers either CAN'T or WON'T do what it takes to score at that level. A 750+ score is closer to the 99th percentile.
Many Test Takers require 3 months (or more) to hit their respective peak scores; those peak scores are not necessarily 700+ scores.
Studying for the GMAT is a big process, but since the GMAT is a predictable, standardized Exam, you CAN train to CRUSH it. With such a high score goal, you should consider using a GMAT Course of some kind.
If you have any specific questions, then you can feel free to contact me directly.
GMAT assassins aren't born, they're made,
Rich
