SOLUTION: a student has earned scores of 80, 81, and 82 on the first 3 of 4 tests. if the student wants an average (arithmetic mean) of exactly 85, what score must she earn on the forth test

Algebra ->  Average -> SOLUTION: a student has earned scores of 80, 81, and 82 on the first 3 of 4 tests. if the student wants an average (arithmetic mean) of exactly 85, what score must she earn on the forth test      Log On


   

Question 324102: a student has earned scores of 80, 81, and 82 on the first 3 of 4 tests. if the student wants an average (arithmetic mean) of exactly 85, what score must she earn on the forth test?
Answer by maciaemi(11) About Me  (Show Source):
You can put this solution on YOUR website!
The student must get a 97 on the 4th test in order to get an average of exactly 85.