SOLUTION: a mean average of 60 on seven exam is needed to pass a course. on her first exams, paula received grades 51, 72, 80, 62, 57, and 69
what grade must she receive on her last exam
Algebra ->
Percentage-and-ratio-word-problems
-> SOLUTION: a mean average of 60 on seven exam is needed to pass a course. on her first exams, paula received grades 51, 72, 80, 62, 57, and 69
what grade must she receive on her last exam
Log On
Question 820081: a mean average of 60 on seven exam is needed to pass a course. on her first exams, paula received grades 51, 72, 80, 62, 57, and 69
what grade must she receive on her last exam to pass the course?
You can put this solution on YOUR website! 51, 72, 80, 62, 57, and 69 add up to 391
-9+12+20+2-3+9=+31
391-360=31
6*60=360 so you are 31 over the average of sixty
so you need only 60-31=29
(391+x)/7>=60
x>=29
Wow
