document.write( "Question 800175: A goldsmith has 10g of a 50% gold alloy. How many grams of pure gold should be added to the alloy to make an alloy which is 75% gold? \n" ); document.write( "
Algebra.Com's Answer #482972 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! (10*.5)+x=.75(10+x)\r \n" ); document.write( "\n" ); document.write( "5+x=7.5+.75x \n" ); document.write( ".25x=2.5 \n" ); document.write( "x=10 \n" ); document.write( "check \n" ); document.write( "5+10=.75(20) \n" ); document.write( "15=15 \n" ); document.write( "ok\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |