document.write( "Question 550477: how many quarts of pure anti-freeze must be added to 7 quarts of a 20% antifreeze solution to obtain a 30% anti-freeze solution?\r
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document.write( "__Quart(s )of pure antifreeze must be added. \n" );
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Algebra.Com's Answer #358792 by scott8148(6628)![]() ![]() You can put this solution on YOUR website! (20%)(7) + (100%)(x) = (30%)(7 + x) \n" ); document.write( " |