SOLUTION: Three math classes x , y and z take an exam. i. the average of the classes x, y, and z are 83, 76 and 85, respectively. ii. the average of classes x and y TOGETHER is 79.

SOLUTION: Three math classes x , y and z take an exam. i. the average of the classes x, y, and z are 83, 76 and 85, respectively. ii. the average of classes x and y TOGETHER is 79.

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Question 864259: Three math classes x , y and z take an exam.
i. the average of the classes x, y, and z are 83, 76 and 85, respectively.
ii. the average of classes x and y TOGETHER is 79.
iii. the average of classes y and z TOGETHER is 81.
Find the average score for the students of all 3 classes COMBINED.
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
already answered
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