document.write( "Question 27788: How many kilograms of zinc that is 33% pure should be mixed with 12 kilograms of alloy that is 45% pure to make an alloy that is 39% pure zinc? \n" ); document.write( "
Algebra.Com's Answer #15125 by Paul(988)\"\" \"About 
You can put this solution on YOUR website!
0.33x+0.45(12)=0.39(x+12)
\n" ); document.write( "0.33x+5.4=0.39x+4.68
\n" ); document.write( "-0.06x=-0.72
\n" ); document.write( "x=12\r
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\n" ); document.write( "\n" ); document.write( "Hence, about 12 solution must be added.
\n" ); document.write( "Paul.
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