The sum of her first 5 scores is 382
6*77 = 462
6*85 = 510
So the last score must satisfy
462 < 382+x < 510
80 < x < 128
So, any score above 80 will get her a C grade.
To receive a C grade, a student must average more than a 77 but less than 85. If Emma received a C in the course and had five grades of 74,83,73,67,and 85 before taking the final exam, what were the possible grades for her final there were 100 points. (Assume all six grades are weighted equally and let x represent the unknown score)
1 answer