document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=904223>Question 904223</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Natalia spent $28.10 at an office supply store when she purchased boxes of pens and paper clips. The pens cost $3.50 per box, and the paper clips cost $0.70 per box. How many boxes of each did she buy if she purchased 10 items all together?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #548575 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=548575\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> There is something wrong with the problem<BR>\n" );
document.write( "a+b=10,<BR>\n" );
document.write( "3.5*a+0.7*b=28.1<BR>\n" );
document.write( "a=10-b<BR>\n" );
document.write( "3.5*(10-b)+0.7*b=28.1<BR>\n" );
document.write( "35.0-3.5b+0.7*b=28.1<BR>\n" );
document.write( "-2.8*b=-6.9<BR>\n" );
document.write( "b=2.46428571<BR>\n" );
document.write( "a=10-b<BR>\n" );
document.write( "a=7.53571429 at $3.5 and  b=2.46428571 at $0.7<BR>\n" );
document.write( "check<BR>\n" );
document.write( "7.53571429+2.46428571=10<BR>\n" );
document.write( "3.5*a+0.7*b=28.1<BR>\n" );
document.write( "3.5*7.53571429+0.7*2.46428571=28.1<BR>\n" );
document.write( "26.375+1.725=28.1<BR>\n" );
document.write( "28.1=28.1<BR>\n" );
document.write( "ok<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );