Question 160944: a student averages 84 on five tests. if the student recieved grades of 84,82,81, and 79 on the first four exams,what grade did the student recieve on the fifth exam? Answer by nerdybill(7090) (Show Source):
You can put this solution on YOUR website! Let x = grade on fifth exam
Then because "a student averages 84 on five tests"
(84+82+81+79+x)/5 = 84
(326+x)/5 = 84
326+x = 425
x = 425-326
x = 99