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document.write( " How much of an alloy that is 10% copper should be mixed with 300 ounces of an
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document.write( "alloy that is 90% copper in order to get an alloy that is 50% copper?\r
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Algebra.Com's Answer #83393 by checkley71(8403)![]() ![]() ![]() You can put this solution on YOUR website! .1X+.90*300=.5(300+X) \n" ); document.write( ".1X+270=150+.5X \n" ); document.write( ".1X-.5X=150-270 \n" ); document.write( "-.4X=-120 \n" ); document.write( "X=-120/-.4 \n" ); document.write( "X=300 OUNCES OF 10% COPPER IS REQUIRED. \n" ); document.write( "PROOF: \n" ); document.write( ".10*300+.9*300=.5*600 \n" ); document.write( "30+270=300 \n" ); document.write( "300=300 \n" ); document.write( " \n" ); document.write( " |