document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=191759>Question 191759</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can someone help? I just can't figure out these \"linear word problems\".Thank-you<BR>\n" );
document.write( "Soybean meal is 14% protein, cornmeal is 7% protein. How many pounds of each should be mixed together in order to get a 280 lb. mixture that is 10% protein?<BR>\n" );
document.write( "Any help I appreciate. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #143866 by </B><A HREF=/tutors/aboutme.mpl?userid=RAY100><B>RAY100(1637)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=RAY100><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=143866\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .14  S  + .07   C  =   .10  *280  \r<BR>\n" );
document.write( "\n" );
document.write( "but  s + c  =280,    therefore  let  c=280-s\r<BR>\n" );
document.write( "\n" );
document.write( ".14  S  +.07  (  280-S)  =  28\r<BR>\n" );
document.write( "\n" );
document.write( ".14 S  + 19.6  -.07 S  =  28\r<BR>\n" );
document.write( "\n" );
document.write( ".07  S  =  8.4\r<BR>\n" );
document.write( "\n" );
document.write( "S=120\r<BR>\n" );
document.write( "\n" );
document.write( "and  c=  280-120 = 160\r<BR>\n" );
document.write( "\n" );
document.write( "check\r<BR>\n" );
document.write( "\n" );
document.write( ".14  (120)  +  .07  (  160)  =  28\r<BR>\n" );
document.write( "\n" );
document.write( "16.8  +  11.2  =  28      ok </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );