document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=289107>Question 289107</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a 90% antifreeze solution is to be mixed with a 75% solution to make 30 liters of an 80% solution. How many liters of the 90% and 75% solutions should be used? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #209471 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=209471\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A 90% antifreeze solution is to be mixed with a 75% solution to make 30 liters of an 80% solution. <BR>\n" );
document.write( "How many liters of the 90% and 75% solutions should be used?<BR>\n" );
document.write( "-----------------------------<BR>\n" );
document.write( "Equation:<BR>\n" );
document.write( "alcohol + alcohol = alcohol<BR>\n" );
document.write( "0.9x + 0.75(30-x) = 0.30(80)<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Multiply thru by 100 and solve for \"x\":<BR>\n" );
document.write( "90x + 75*30 - 75x = 30*80<BR>\n" );
document.write( "15x = 5*30<BR>\n" );
document.write( "x = 6 liters (amt. of 90% antifreeze needed in the mixture)<BR>\n" );
document.write( "---<BR>\n" );
document.write( "30-x = 24 liters (amt. of 75% antifreeze needed in the mixture)<BR>\n" );
document.write( "====================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "==================================== </SPAN>\n" );
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