Dear manuag

Here's a 1-month study plan I wrote for a blog . ..

https://magoosh.com/gmat/2012/1-month-gm ... -schedule/

You may well be able to adapt this for your purposes. Even though you have only 20 days left, you may consider purchasing Magoosh. Our support will answer any GMAT question from any prep source, so it's like buying ongoing support for your MGMAT and other books. We have 200+ lesson videos, and 800+ practice questions, each with it's own video solution. We're having a sale right now, so it's a particularly opportune time to take advantage of what we offer.

Here's a practice DS question:
https://gmat.magoosh.com/questions/990

Here's a practice CR question:
https://gmat.magoosh.com/questions/1257

With both of those, when you submit your answer, on the next page the video explanation will come up.

I hope that's helpful. Let me know if you have any questions.

Mike