document.write( "Question 943103: Gold is alloyed with different metals to make it hard enough to be used in jewelry. The amount of gold present in a gold alloy is measured in 24ths called karats. 24-karat gold is 2424 or 100% gold. Similarly, 18-karat gold is 1824 or 75% gold. How many ounces of 18-karat gold should be added to an amount of 12-karat gold to make 4 ounces of 14-karat gold?\r
\n" );
document.write( "\n" );
document.write( " \n" );
document.write( "
Algebra.Com's Answer #574963 by lwsshak3(11628)![]() ![]() ![]() You can put this solution on YOUR website! Gold is alloyed with different metals to make it hard enough to be used in jewelry. The amount of gold present in a gold alloy is measured in 24ths called karats. 24-karat gold is 2424 or 100% gold. Similarly, 18-karat gold is 1824 or 75% gold. How many ounces of 18-karat gold should be added to an amount of 12-karat gold to make 4 ounces of 14-karat gold? \n" ); document.write( "*** \n" ); document.write( "let x=amt of 18 karat gold should be added \n" ); document.write( "4-x=amt of 12 karat gold should be added \n" ); document.write( ".75x+.50(4-x)=4*7/12 \n" ); document.write( ".75x+2-.50x=7/3 \n" ); document.write( ".25x=7/3-6/3=1/3 \n" ); document.write( "x=1/(3*.25)=1/.75=4/3 \n" ); document.write( "How many ounces of 18-karat gold should be added? 4/3 \n" ); document.write( " |