document.write( "Question 335423: How much pure gold should be mixed with 12 karat gold to obtain 72 grams of 18 karat gold? \n" ); document.write( "
Algebra.Com's Answer #240644 by Alan3354(69443)\"\" \"About 
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Pure gold is 24 karat.
\n" ); document.write( "18 is the midpoint between 12 & 24, so equal amounts.
\n" ); document.write( "36 grams of each
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