document.write( "Question 916686: JON wants a grade of 80% in Science. He currently has two test scores. If his scores are 85% and 70%, what does he need to earn on the last test? Assume there are no other grades. \n" ); document.write( "
Algebra.Com's Answer #556212 by josmiceli(19441)\"\" \"About 
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\"+%28+85+%2B+70+%2B+x+%29+%2F+3+=+80+\"
\n" ); document.write( "\"+85+%2B+70+%2B+x+=+240+\"
\n" ); document.write( "\"+155+%2B+x+=+240+\"
\n" ); document.write( "\"+x+=+85+\"
\n" ); document.write( "He needs an 85% on the 3rd test
\n" ); document.write( "to get 80% for the course\r
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