SOLUTION: You have scored 75, 79, 78, and 78 in four test out of five test. You want to score an overall B (grade). You have the fifth test to pull up your score. How much minimum should you

Algebra ->  Average -> SOLUTION: You have scored 75, 79, 78, and 78 in four test out of five test. You want to score an overall B (grade). You have the fifth test to pull up your score. How much minimum should you      Log On


   

Question 270737: You have scored 75, 79, 78, and 78 in four test out of five test. You want to score an overall B (grade). You have the fifth test to pull up your score. How much minimum should you score in the fifth test so that you raise your average to 80( get an overall B grade).
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
(75+79+78+78+x)/5=80
(310+x)/5=80
310+x=80*5
x=90