Hi snigdh0699,
That type of Score gain in such a short period of time would depend a great deal on your 'starting point' (for example, it's far easier to go from 450 to 500 - since there are lots of different ways to pick up those additional points - than it is to go from 700 to 750). At most 'score levels' though, an improvement of 50-70 points in just 1 week is probably too difficult to be considered realistic.
Before I can offer you any additional advice for your studies, it would help if you could provide a bit more information on how you've been studying and your goals:
Studies:
1) How long have you studied? How many hours do you typically study each week?
2) What study materials have you used so far? What “brands” of CATs/mocks have you used?
3) On what dates (or approximate dates) did you take EACH of your CATs/mocks and how did you score on EACH (including the Quant and Verbal Scaled Scores for EACH)?
Goals:
4) What is your overall goal score?
5) When are you planning to apply to Business School and what Schools are you planning to apply to?
GMAT assassins aren't born, they're made,
Rich