document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1101216>Question 1101216</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A metal recycling plant has some scrap metal that is 41% copper. It also has some other scrap metal that is 5% copper. The scrap metal is melted together and produces 1700 g of metal that is 44% copper. How many grams of the 51% copper metal were mixed with the 41% copper metal?\r<BR>\n" );
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document.write( "A.1190 g<BR>\n" );
document.write( "B.510 g<BR>\n" );
document.write( "C.867 g<BR>\n" );
document.write( "D.1700 g </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #715760 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=715760\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> We know the total amount is 1700 g <BR>\n" );
document.write( "We know the percentage of the total amount is 44%<BR>\n" );
document.write( "We know the total amount has 748 g of 100%<BR>\n" );
document.write( "We want to know the amount of copper at 41%<BR>\n" );
document.write( "We want to know the amount of copper at 51%<BR>\n" );
document.write( "x+y=1700,<BR>\n" );
document.write( "0.41*x+0.51*y=0.44*1700<BR>\n" );
document.write( "0.41*x+0.51*y=748<BR>\n" );
document.write( "x=1700-y<BR>\n" );
document.write( "0.41*(1700-y)+0.51*y=748<BR>\n" );
document.write( "697-0.41y+0.51*y=748<BR>\n" );
document.write( "0.1*y=51<BR>\n" );
document.write( "We now know amount of copper at 51%<BR>\n" );
document.write( "y=510 g at 51%<BR>\n" );
document.write( "x=1700-y<BR>\n" );
document.write( "We now know amount of copper at 41%<BR>\n" );
document.write( "x=1190 g at 41%<BR>\n" );
document.write( "check<BR>\n" );
document.write( "0.41*1190+0.51*510=0.44*1700<BR>\n" );
document.write( "487.9+260.1=748<BR>\n" );
document.write( "748=748<BR>\n" );
document.write( "ok<BR>\n" );
document.write( " </SPAN>\n" );
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