document.write( "Question 250904: thirty kg of nickel that was 38% pure was mixed with a nickel alloy that was 28%pure. how many kg of each kind were used to produce and alloy that was 32% pure. \n" ); document.write( "
Algebra.Com's Answer #184508 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! .38*30+.28x=.32(30+x) \n" ); document.write( "11.4+.28x=9.6+.32x \n" ); document.write( ".28x-.32x=9.6-11.4 \n" ); document.write( "-.04x=-1.8 \n" ); document.write( "x=-1.8/-.04 \n" ); document.write( "x=45 kg. of 28% alloy ans. \n" ); document.write( "Proof: \n" ); document.write( ".38*30+.28*45=.32(30+45) \n" ); document.write( "11.4+12.6=.32*75 \n" ); document.write( "24=24 \n" ); document.write( " |