GMAT Strategy

Hey guys,

I am working through the OG11 Quant Review (The skinnier green book if that helps). I noticed that I am running into trouble around problem 130. I feel confident answering up to this point. Verbal is my stronger point, so I am really trying to hype up the math. My question is, does anyone have a clue of approximately what score range/ percentile question 130 is in the OG Quant Focus. I know they are ascending difficulty, so I am trying to gauge myself.

Thanks for the help,

Corey