document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1105087>Question 1105087</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Each of the ten volumes of the collected works of Theodore Sturgeon is available in paperback for $\$$15 or in hardcover for $\$$25. Theresa buys a copy of each of the ten volumes for a total of $\$$220. How many hardcover volumes did she buy?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #719823 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=719823\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> P=x<BR>\n" );
document.write( "H=10-x<BR>\n" );
document.write( "x*15+(10-x)25=220<BR>\n" );
document.write( "15x+250-25x=220<BR>\n" );
document.write( "-10x=-30<BR>\n" );
document.write( "x=3 paperback@$15=$45<BR>\n" );
document.write( "10-x=7 hardcover@$25=$175ANSWER<BR>\n" );
document.write( "They add to $220. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );