document.write( "Question 355016: one alloy contains 80% gold (in weight) and another alloy contains 55% gold. how many grams of each alloy should be contained to make a 40kg of an alloy that contains 70% gold? \n" ); document.write( "
Algebra.Com's Answer #253605 by mananth(16946)![]() ![]() You can put this solution on YOUR website! 80% gold (in weight) let this be x kg \n" ); document.write( "another alloy contains 55% gold. this will be 40-x kg \n" ); document.write( "Mix 40kg of an alloy that contains 70% gold? \n" ); document.write( ".. \n" ); document.write( "80x+55(40-x)=40*70 \n" ); document.write( "80x+2200-55x=2800 \n" ); document.write( "25x=2800-2200 \n" ); document.write( "25x=600 \n" ); document.write( "x=600/25 \n" ); document.write( "x= 24 kg ----- 80% gold \n" ); document.write( "balance 16 kgs will be 55% gold alloy \n" ); document.write( "... \n" ); document.write( "m.ananth@hotmail.ca \n" ); document.write( " |