document.write( "Question 189461: How many quarts of antifreeze must be added to 8 quarts of a 50% antifreeze solution to obtain a 60% antifreeze solution? \n" ); document.write( "
Algebra.Com's Answer #142131 by nerdybill(7384)\"\" \"About 
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How many quarts of antifreeze must be added to 8 quarts of a 50% antifreeze solution to obtain a 60% antifreeze solution?
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\n" ); document.write( "Let x = quarts of antifreeze added
\n" ); document.write( "then
\n" ); document.write( "\"amt of antifreeze originally\" + \"added antifreeze\" = \"desired mix of antifreeze\"
\n" ); document.write( ".50(8) + x = .60(8+x)
\n" ); document.write( "4 + x = 4.8 + .60x
\n" ); document.write( "4 + .40x = 4.8
\n" ); document.write( ".40x = .8
\n" ); document.write( "x = .8/.40
\n" ); document.write( "x = 2 quarts\r
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