SOLUTION: There are three exams in a marking period. A student received 75 and 80 on the first two exams. What grade must the student earn on the last exam to get an average of no less than

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Question 450824: There are three exams in a marking period. A student received 75 and 80 on the first two exams. What grade must the student earn on the last exam to get an average of no less than 80% for the marking period.
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
3x80=240
75+80+n=240
n=240-155=85
The student needs no less than an 85..