SOLUTION: After taking 3 math quizzes Elise has an average of 89. What must score on the fourth quiz to raise her average to 91?
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Question 977164: After taking 3 math quizzes Elise has an average of 89. What must score on the fourth quiz to raise her average to 91?
Answer by Cromlix(4381) (Show Source): You can put this solution on YOUR website!
3 maths quizzes = 3 x average of 89 = 267 (total score)
4 maths quizzes = 4 x average of 91 = 364 (total score)
therefore Elise must score 364 - 267 = 97
on the 4th quiz.
Hope this helps:-)
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