SOLUTION: two classes of high school students take the same test . once class of 20 students had an average score 85% ; the other class of 30 students had an average score of 70% . what is t

Question 1055459: two classes of high school students take the same test . once class of 20 students had an average score 85% ; the other class of 30 students had an average score of 70% . what is the average score for all students in both classes ?
a) 76% b) 77% c) 78% d) 79% e) 80%
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Find the weighted average,

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