document.write( "Question 369696: A goldsmith has 60 pounds of an alloy that is 50% pure gold. How many pounds of an alloy that is 75% pure gold, must be combined with the given 60 pounds of alloy that is 50% pure gold to form an alloy that will be 72% pure gold?\r
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document.write( "So far, I have done x+y=72 (not quite sure though if that equation is correct)\r
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Algebra.Com's Answer #263451 by Fombitz(32388)![]() ![]() You can put this solution on YOUR website! Let A be the amount of 75% gold. \n" ); document.write( "Look at the concentrations. \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " |