SOLUTION: Please help. Question from text. On three examinations, you have grades of 88,78, and 86. There is still a final examination, which counts as one grade. In order to get an A, your

Algebra ->  Average -> SOLUTION: Please help. Question from text. On three examinations, you have grades of 88,78, and 86. There is still a final examination, which counts as one grade. In order to get an A, your      Log On


   

Question 183041This question is from textbook
: Please help. Question from text.
On three examinations, you have grades of 88,78, and 86. There is still a final examination, which counts as one grade. In order to get an A, your average must be at least 90. If you get 100 on the final, compute your average and dertermine if an A int he course is possible.
Thank you.... This question is from textbook

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Remember, the average of "x" scores is simply the sum of those scores over "x".


In this case, we have the scores: 88,78,86, and 100


So add them up and divide them by 4 (the number of scores present)


A=%2888%2B78%2B86%2B100%29%2F4=352%2F4=88


So if you receive a perfect score on the final exam, you will get an 88.


Since 88%3C90, this means that it is NOT possible to get an A.