i dont think theres any specific way , especially with the way the test is graded (i believe the earlier questions affect your score more significantly than the later ones).

to give you some idea, i took 2 gmatprep tests. i didnt record the breakdown of my first test, but on my second test i got a 47 on the Q section. out of 37 questions, i got 24 right, 13 wrong. i got most of the wrong ones in the middle of the test, and then the last few i ran low on time so i got many of those wrong as well. so to get the scores you are advocating, i'd say you'd need at least 25+ questions right, with a majority of those coming in the first 2/3 of the test.

Thanks. So what were you GMATPrep scores for those if you don't mind me asking?

well like i said i (stupidly) didnt record my breakdown for my first gmatpreptest. i did note i got a 730 total both times, with the following breakdown of correct and incorrect answers:

test 1: 730 (last week)

Q: scaled score (?); 26 correct, 11 incorrect
V: scaled score (?); 35 correct, 6 incorrect

test 2: 730 (today)

Q: scaled score 47; 24 correct, 13 incorrect
V: scaled score 44; 36 correct, 5 incorrect

so i basically flip flopped a question or 2 in each of the sections (2 less correct math questions and 1 more correct verbal the second time around).