document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=824684>Question 824684</A>: <I><SPAN STYLE=\"word-break: break-all;\"> saima bought 2 black pencils and three red pencils for Rs.23. after a week she bought 3 black pencils and 2 red pencils.if price of pencils remained same for both transactions, how muchshe paid for one black pencil? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #496688 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=496688\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> saima bought 2 black pencils and three red pencils for Rs.23. after a week she bought 3 black pencils and 2 red pencils.if price of pencils remained same for both transactions, how muchshe paid for one black pencil?<BR>\n" );
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document.write( "Equations:<BR>\n" );
document.write( "2b + 3r = 23<BR>\n" );
document.write( "3b + 2r = 23<BR>\n" );
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document.write( "Modify for elimination:<BR>\n" );
document.write( "4b + 6r = 2*23<BR>\n" );
document.write( "9b + 6r = 3*23<BR>\n" );
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document.write( "Subtract and solve for \"b\":<BR>\n" );
document.write( "5b = 23<BR>\n" );
document.write( "b = 4.60 Rs<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "================ </SPAN>\n" );
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