document.write( "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? \n" ); document.write( "
Algebra.Com's Answer #598668 by Cromlix(4381)\"\" \"About 
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3 maths quizzes = 3 x average of 89 = 267 (total score)
\n" ); document.write( "4 maths quizzes = 4 x average of 91 = 364 (total score)
\n" ); document.write( "therefore Elise must score 364 - 267 = 97
\n" ); document.write( "on the 4th quiz.
\n" ); document.write( "Hope this helps:-)
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