document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=87954>Question 87954</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Word Problem to solve - thank you<BR>\n" );
document.write( "need 50 warheads and silos to complete project<BR>\n" );
document.write( "Cost per warhead is 4 million dollars and silo cost is 6 million<BR>\n" );
document.write( "What is the number of warheads and silos I can produce if the budget is 210 million<BR>\n" );
document.write( "Need the following steps:<BR>\n" );
document.write( "1. assign variables<BR>\n" );
document.write( "2.  write algebraic model<BR>\n" );
document.write( "3.  solve the model<BR>\n" );
document.write( "4.   answer<BR>\n" );
document.write( "thanks<BR>\n" );
document.write( "BB </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #63837 by </B><A HREF=/tutors/aboutme.mpl?userid=tutorcecilia><B>tutorcecilia(2152)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=tutorcecilia><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/cgi-bin/show-face.mpl?user=tutorcecilia><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=63837\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x+y=50<BR>\n" );
document.write( "Let x=warheads<BR>\n" );
document.write( "Let y = silos\r<BR>\n" );
document.write( "\n" );
document.write( "x+y=50<BR>\n" );
document.write( "Than y=50-x<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Each warhead (x) costs 4M; each silo (y) costs 6M; total cost is 210M<BR>\n" );
document.write( "4x+6y=210 [substitues y=50-x]<BR>\n" );
document.write( "4x+6(50-x)=210 [simplify and combine like-terms wherever possible]<BR>\n" );
document.write( "4x+300-6x=210<BR>\n" );
document.write( "-2x+300=210 [solve for the x=term]<BR>\n" );
document.write( "-2x+300-300=210-300<BR>\n" );
document.write( "-2x=-90<BR>\n" );
document.write( "-2x/-2=-90/-2<BR>\n" );
document.write( "x=45 warheads<BR>\n" );
document.write( ".<BR>\n" );
document.write( "So, x+y=50<BR>\n" );
document.write( "45+y=50<BR>\n" );
document.write( "y=5 silos<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Check by using the original equation, plug-in the values:<BR>\n" );
document.write( "4x+6y=210 <BR>\n" );
document.write( "4(45)+6(5)=210<BR>\n" );
document.write( "180+30=210<BR>\n" );
document.write( "210=210 [checks out] </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );