document.write( "Question 99866: a student has test scoresof 80, 82, 94, 71. what score does the student need on the next test to produce an average score of 85? \n" ); document.write( "
Algebra.Com's Answer #72700 by checkley71(8403)\"\" \"About 
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(80+82+94+71+X)/5=85
\n" ); document.write( "(327+X)/5=85 NOW CROSS MULTIPLY
\n" ); document.write( "327+X=5*85
\n" ); document.write( "327+X=425
\n" ); document.write( "X=425-327
\n" ); document.write( "X=98 ANSWER FOR THE GRADE NEEDED ON THE FINAL TEST TO GET AN 85 AVERAGE.
\n" ); document.write( "PROOF
\n" ); document.write( "(80+82+94+71+98)/5=85
\n" ); document.write( "425/5=85
\n" ); document.write( "85=85
\n" ); document.write( "
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