since whichever test you too wasn't a real administered test (or came from other testing companies like PR
-- if this isn't from blue book I wager it's from PR
11 tests), it can only give you a range. Go ahead and take the average (i.e. 760).
Btw, if this is the first test from PR
11 tests, just let me say that this particular practice test is ridiculously difficult (imo).