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)\"\" \"About 
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.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( "
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