Posted by ryan montalvo on Wednesday, August 29, 2012 at 10:05am.
vina has the following grades in math 88,85,89,95 and 91.What must be her sixth grade if she wants to get an average of 90?

math  Reiny, Wednesday, August 29, 2012 at 10:36am
solve for x
(88+85+89+95+91+x)/6 = 90