document.write( "Question 160944: a student averages 84 on five tests. if the student recieved grades of 84,82,81, and 79 on the first four exams,what grade did the student recieve on the fifth exam? \n" ); document.write( "
Algebra.Com's Answer #118607 by nerdybill(7384)\"\" \"About 
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Let x = grade on fifth exam
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\n" ); document.write( "Then because \"a student averages 84 on five tests\"
\n" ); document.write( "(84+82+81+79+x)/5 = 84
\n" ); document.write( "(326+x)/5 = 84
\n" ); document.write( "326+x = 425
\n" ); document.write( "x = 425-326
\n" ); document.write( "x = 99
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