calculating SAT score

<p>can anyone tell me roughly how many questions can be missed to achieve the following: 770 CR 730/740 M 750 W essay:
Thank you, my friend would really appreciate it b/c he's trying to get these kind of numbers on the October test.</p>

<p>um I think that if you can get 770 with like -4 or -3
math.....i am pretty sure its -3 for around 740
and writing.... around -4 and 12 on the essay? (this is what someone i know received to get 750)</p>

<p>thanks (to the both of you) :)</p>