document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1054223>Question 1054223</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me to solve this problem.\r<BR>\n" );
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document.write( "A certain mine yields low-grade oil shale containing 18.0 U.S. gallons of oil per ton of rock, and another mine has shale yielding 30.0 gal./ton. How many tons of each must be sent each day to a processing plant that processes 23000 tons of rock per day, so that the overall yield will be 22.0 gal./ton?<BR>\n" );
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document.write( "18.0 gal./ton=<BR>\n" );
document.write( "30.0 gal./ton= </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #669441 by </B><A HREF=/tutors/aboutme.mpl?userid=jorel555><B>jorel555(1290)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jorel555><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=669441\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let n be the the amount of rock coming from the low-grade shale. Then the rock coming from the high-grade shale would be 23000-n. So:<BR>\n" );
document.write( "n/18 + (23000-n)/30 = 23000/22=1045.454545<BR>\n" );
document.write( "5n+3(23000-n)=94090.909090909<BR>\n" );
document.write( "2n=25090.909090909<BR>\n" );
document.write( "n=12545.45454545 tons of low-grade shale;<BR>\n" );
document.write( "23000-n=10454.54545454 tons of high-grade shale. &#9786;&#9786;&#9786;&#9786; </SPAN>\n" );
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