From 550 to 640 .. how to get to 730

Hello khaledyosry ..... for Quants :

1.To start with definitely have a through lookup ( & clear understanding of the concepts ) at GMAT CLUB math book.

2.Follow the link: https://gmatclub.com/forum/all-you-need ... 40445.html
& Ultimate GMAT Quantitative Megathread

3.Practice the questions at different levels (Recommendation: Once your accuracy is >75% at 500-level , move to 600-level. And once you reach the accuracy >75% at 600-level , move to 700-level )DS Question Directory by Topic and Difficulty & PS Question Directory by Topic and Difficulty

4. Where ever you find solutions by Bunuel , chetan2u and other prominent guys ..... understand them so well that you can explain the same to any other.

5. Finally.... If you are shooting for Q50-51........ go for the GMAT CLUB tests.