General GMAT Questions and Strategies | Re: Information on NEW GMAT ESR REPORT - BETA - Upload yours here

Hi everybody
I gave Gmat in feb and got a score 640, Q-42,v-37
Please analyze my ESR for very low quant score.In none of my GMATPREP tests I got Below Q-49 and also never got Q-51.So my quant score was a shock.
I am giving my xam again on 5th Aug,2017. So experts kindly advice me where i went wrong.
I am attaching my ESR of Quant and Verbal.

Thanx in advance.

---