document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=916867>Question 916867</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Twenty ounces of a 50% gold alloy are mixed with 80 oz of a 30% gold alloy. Find the percent concentration of the resulting gold alloy. \r<BR>\n" );
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document.write( "Find the cost per ounce of a gold alloy made from 25 oz of pure gold that costs $1286 per ounce and 45 oz of an alloy that costs $920 per ounce. (Round your answer to the nearest cent.)\r<BR>\n" );
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document.write( "Find the cost per pound of a \"house blend\" of coffee that is made from 16 lb of Central American coffee that costs $8 per pound and 34 lb of South American coffee that costs $5.50 per pound. \r<BR>\n" );
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document.write( "Find the cost per ounce of a mixture of 280 oz of a cologne that costs $6.50 per ounce and 420 oz of a cologne that costs $6.00 per ounce. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #556334 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=556334\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Twenty ounces of a 50% gold alloy are mixed with 80 oz of a 30% gold alloy. Find the percent concentration of the resulting gold alloy.<BR>\n" );
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document.write( "gold + gold = gold<BR>\n" );
document.write( "0.50*20 + 0.30*80 = x(20+80)<BR>\n" );
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document.write( "50*20 + 30*80 = 10000x<BR>\n" );
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document.write( "1000 + 2400 = 10000x<BR>\n" );
document.write( "10000x = 3400<BR>\n" );
document.write( "x = 0.34 or 34%<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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document.write( " Find the cost per ounce of a gold alloy made from 25 oz of pure gold that costs $1286 per ounce and 45 oz of an alloy that costs $920 per ounce. (Round your answer to the nearest cent.)<BR>\n" );
document.write( " Find the cost per pound of a \"house blend\" of coffee that is made from 16 lb of Central American coffee that costs $8 per pound and 34 lb of South American coffee that costs $5.50 per pound.<BR>\n" );
document.write( " Find the cost per ounce of a mixture of 280 oz of a cologne that costs $6.50 per ounce and 420 oz of a cologne that costs $6.00 per ounce. </SPAN>\n" );
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