document.write( "Question 1210373: EmilĂ­a has an average of 70 on 4 different tests. If the lowest score is dropped, her average rises to 90. What is the lowest score? \n" ); document.write( "
Algebra.Com's Answer #852128 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
\"%28w%2Bx%2By%2Bz%29%2F4=70\"\r
\n" ); document.write( "\n" ); document.write( "\"and\"\"then\"\r
\n" ); document.write( "\n" ); document.write( "\"%28x%2By%2Bz%29%2F3=90\", assuming w is lowest score\r
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\n" ); document.write( "\n" ); document.write( "\"system%28w%2Bx%2By%2Bz=280%2Cx%2By%2Bz=270%29\"
\n" ); document.write( "But so many variables are not really necessary for this.\r
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\n" ); document.write( "\n" ); document.write( "Let \"r=x%2By%2Bz\".\r
\n" ); document.write( "\n" ); document.write( "\"system%28w%2Br=280%2Cr=270%29\"
\n" ); document.write( "\"highlight%28w=10%29\"
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