document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=967984>Question 967984</A>: <I><SPAN STYLE=\"word-break: break-all;\"> susan paid .49 per page for color copy and .9 per page for black and white copy. If susn bill for 90 copies was $12.90. How may copies of each type were made<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #591607 by </B><A HREF=/tutors/aboutme.mpl?userid=macston><B>macston(5194)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=macston><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=macston><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=591607\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "C=number of color copies; B=number of black and white copies<BR>\n" );
document.write( "B+C=90<BR>\n" );
document.write( "B=90-C Use this to substitute for B.<BR>\n" );
document.write( "$0.09B+$0.49C=$12.90 Substitute for B.<BR>\n" );
document.write( "$0.09(90-C)+$0.49C=$12.90<BR>\n" );
document.write( "$8.10-$0.09C+$0.49C=$12.90 Subtract $8.10 from each side.<BR>\n" );
document.write( "$0.40C=$4.80 Divide each side by $0.40<BR>\n" );
document.write( "C=12 ANSWER 1: There were 12 color copies.<BR>\n" );
document.write( "B=90-C=90-12=78 ANSWER 2: There were 78 black and white copies.<BR>\n" );
document.write( ".<BR>\n" );
document.write( "CHECK:<BR>\n" );
document.write( "$0.09B+$0.49C=$12.90 <BR>\n" );
document.write( "$0.09(78)+$0.49(12)=$12.90  <BR>\n" );
document.write( "$7.02+$5.88=$12.90<BR>\n" );
document.write( "$12.90=$12.90 </SPAN>\n" );
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