document.write( "Question 458434: Assume that a jeweler needs 55 grams of an alloy that is 50% gold. He has available one alloy that is 25% gold, and another that is 70% gold; he will mix some of each.\r
\n" ); document.write( "\n" ); document.write( "If x= number of grams of the first alloy (so the number of grams of the second is 55-x), find x.
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Algebra.Com's Answer #317236 by jorel1380(3719)\"\" \"About 
You can put this solution on YOUR website!
55x.5=27.5
\n" ); document.write( "w+z=55
\n" ); document.write( ".25w+.7z=27.5
\n" ); document.write( "25w+70z=2750
\n" ); document.write( "25w+25z=1375
\n" ); document.write( "45z=1375
\n" ); document.write( "z=30.55555
\n" ); document.write( "w=24.44444
\n" ); document.write( "You need 24.4444 gms. of 25% gold and 30.555555 gms. of 70% gold for your mix..
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