Hello Everyone!
I appeared for GMAT in Jan/10, scored 450 and in March/10, scored 460. I used OG-12, Manhattan SC and CR Bible. My verbal is too poor, always in 20+ range and quants needs further improvement (35+ range). I took Manhattan GMAT tests, scores are 400, 450, 540, 590,570,590. GMAT Prep-I secured 570 and GMAT Prep-2 secured 540.
Please advise me in detail regarding GMAT preparation to score 750+ and when should I retake my GMAT exam.