document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=185487>Question 185487</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve Problems Using Linear Systems<BR>\n" );
document.write( "9. Milk and cream contain different percents of butterflat. How much 3% milk needs to be mixed with how much 15% cream to give 20 L of 6% cream?<BR>\n" );
document.write( "(answers are: 15 L of 3% milk, 5 L of 15% cream, but i dont know how to solve it?) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #139144 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=139144\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Milk and cream contain different percents of butterfat. How much 3% milk needs to be mixed with how much 15% cream to give 20 L of 6% cream?<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "fat + fat = fat<BR>\n" );
document.write( "0.03x + 0.15(20-x) = 0.06*20<BR>\n" );
document.write( "3x + 15*20 - 15x = 6*20<BR>\n" );
document.write( "-12x = -9*20<BR>\n" );
document.write( "x = (3/4)*20<BR>\n" );
document.write( "x = 15 L (amt. of 3% milk in the mixture)<BR>\n" );
document.write( "20-x = 5 L (amt. of 15% cream in the mixture)<BR>\n" );
document.write( "==================================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );