document.write( "Question 584328: you have two test grades one of 84 and 82. what must you get on the third test to have an average of 85 \n" ); document.write( "

Algebra.Com's Answer #372757 by richwmiller(17219) $\"\"$ $\"About$

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(84+82+x)/3=85
\n" ); document.write( "x=89
\n" ); document.write( "another way
\n" ); document.write( "85-84=1
\n" ); document.write( "85-82=3
\n" ); document.write( "85+1+3=89
\n" ); document.write( " \n" ); document.write( "

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