document.write( "Question 209338: How many quarts of pure antifreeze must be added to 4 quarts of a 20% antifreeze solution to obtain a 30% anitfreeze solution \n" ); document.write( "
Algebra.Com's Answer #158285 by rfer(16322)\"\" \"About 
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1.00x+.2(4-x)=4*.3
\n" ); document.write( "x+.8-.2x=1.2
\n" ); document.write( ".8x=.4
\n" ); document.write( "x=.5 qts of 100%
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