document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=529764>Question 529764</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I have 40 bills in my cash drawer.  Some are $5 bills. The rest are $10 bills.\r<BR>\n" );
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document.write( "The total amount of the 40 bills is $260.\r<BR>\n" );
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document.write( "How many $5 bills and how many $10 bills are in my cash drawer ??? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #349738 by </B><A HREF=/tutors/aboutme.mpl?userid=oberobic><B>oberobic(2304)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=oberobic><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=349738\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Like coin problems, you have to keep track of the count of the bills and their value.<BR>\n" );
document.write( "x = number of $5 bills<BR>\n" );
document.write( "5x = value of the $5 bills<BR>\n" );
document.write( "y = number of $10 bills<BR>\n" );
document.write( "10y = value of the $10 bills<BR>\n" );
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document.write( "x + y = 40<BR>\n" );
document.write( "so<BR>\n" );
document.write( "x = 40-y<BR>\n" );
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document.write( "5x + 10y = 260<BR>\n" );
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document.write( "substitute for x<BR>\n" );
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document.write( "5(40-y) + 10y = 260<BR>\n" );
document.write( "200 -5y + 10y = 260<BR>\n" );
document.write( "5y = 60<BR>\n" );
document.write( "y = 12<BR>\n" );
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document.write( "x = 40-y<BR>\n" );
document.write( "x = 28<BR>\n" );
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document.write( "Check the value to determine if this is the correct answer.<BR>\n" );
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document.write( "5*28 = 140<BR>\n" );
document.write( "10 * 12 = 120<BR>\n" );
document.write( "140 + 120 = 260<BR>\n" );
document.write( "Correct.<BR>\n" );
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document.write( "Answer: You have 28 $5 bills and 12 $10 bills.<BR>\n" );
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document.write( "Done. </SPAN>\n" );
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