document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=63752>Question 63752</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A metal alloy is 25% copper. Another metal alloy is 50% copper. How much of each alloy should be mixed to create 1000 grams of an alloy that is 45% copper? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #44446 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=44446\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A metal alloy is 25% copper. Another metal alloy is 50% copper. How much of each alloy should be mixed to create 1000 grams of an alloy that is 45% copper?<BR>\n" );
document.write( "------------<BR>\n" );
document.write( "Let amount of 25% alloy be \"x\" ; amount of copper in it is 0.25x grams<BR>\n" );
document.write( "Amount of 50% alloy is \"1000-x\" ; <BR>\n" );
document.write( "amount of copper is 0.5(1000-x)=500-0.5x grams<BR>\n" );
document.write( "Amount of mixture is 1000 grams; amount of copper is .45(1000)=450 grams<BR>\n" );
document.write( "-----------<BR>\n" );
document.write( "EQUATION:<BR>\n" );
document.write( "copper + copper = copper<BR>\n" );
document.write( "0.25x+500-0.5x=450<BR>\n" );
document.write( "-0.25x=-50<BR>\n" );
document.write( "x=200 grams (amount of 25% alloy)<BR>\n" );
document.write( "1000-x=800 grams (amount of 50% alloy)<BR>\n" );
document.write( "--------<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );