document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=214314>Question 214314</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I am having a hard time trying to figure this problem out. It would be greatly appreciated if you could assist me. This question is from a work book not the text book:\r<BR>\n" );
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document.write( "Brass is an alloy made up of copper and zinc in varying proportions.  How much brass containing 75.5% copper must be combined with a different brass containing 86.3% copper to make 5250kg of brass containing 80.0% copper\r<BR>\n" );
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document.write( "Thanks so much, </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #161882 by </B><A HREF=/tutors/aboutme.mpl?userid=Earlsdon><B>Earlsdon(6294)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Earlsdon><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=161882\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> One way to approach these kinds of problems is to write down the amounts of copper (Cu) there are in the different brass alloys. Let x = the amount of the brass with 75.5% Cu.<BR>\n" );
document.write( "The amount of amount of Cu in x kgs of this alloy can be expressed as:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%280.755%29 ALIGN=MIDDLE  ALT=\"x%280.755%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >kg of Cu.<BR>\n" );
document.write( "The amount of Cu in the other 86.3% Cu-brass alloy can be expressed as:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%285250-x%29%280.863%29 ALIGN=MIDDLE  ALT=\"%285250-x%29%280.863%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >kg. of Cu.<BR>\n" );
document.write( "The sum of these two amounts is to equal 5250 kg of 80% Cu-brass.<BR>\n" );
document.write( "So we can write the equation to find x.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.755x%2B0.863%285250-x%29+=+0.8%285250%29 ALIGN=MIDDLE  ALT=\"0.755x%2B0.863%285250-x%29+=+0.8%285250%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Simplify and solve for x.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.755x%2B4530.75-0.863x+=+4200 ALIGN=MIDDLE  ALT=\"0.755x%2B4530.75-0.863x+=+4200\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-0.108x%2B4530.75+=+4200 ALIGN=MIDDLE  ALT=\"-0.108x%2B4530.75+=+4200\"   DISABLED_style= \"max-width:90%; height:auto;\" > Subtract 4530.75 from both sides.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-0.108x+=+-330.75 ALIGN=MIDDLE  ALT=\"-0.108x+=+-330.75\"   DISABLED_style= \"max-width:90%; height:auto;\" > Divide both sides by -0.108<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28x+=+3062.5%29 ALIGN=MIDDLE  ALT=\"highlight%28x+=+3062.5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >kg of the brass with 75.5% Cu. </SPAN>\n" );
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