General GMAT Questions and Strategies | Re: What to do 30-14-7-3-1 Days before the test

What percentage of tough questions (700+) should one expect for getting a score around 720 (Q~49,V~39)?? I have a month left for exam and want to focus on problem which are medium to hard. want to know how much should i focus (time in prepration) on hard problems?

Thanks

---