document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=211654>Question 211654</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A stamp collection consists of 8-cent, 13-cent, and 18-cent stamps. The number of 8-cent stamps is twice the number of 18-cent stamps. There are 3 more 13-cent stamp than 18-cent stamps. The total value of the stamps in the collection is $3.68. Find the number of 8-cent stamps in this collection.\r<BR>\n" );
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document.write( "I tried letting<BR>\n" );
document.write( "X = 18-cent stamps <BR>\n" );
document.write( "2x = 13-cent stamps<BR>\n" );
document.write( "X+3 = 8-cent stamps \r<BR>\n" );
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document.write( "There's a similar problem on the site, but I can't make it work for my own problem. I keep getting decimal answers, when I think it should be whole numbers (number of stamps; you can't really have a fraction of a stamp). </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #159921 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=159921\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> X = 18-cent stamps <BR>\n" );
document.write( "2x = 8-cent stamps<BR>\n" );
document.write( "X+3 = 13-cent stamps <BR>\n" );
document.write( "You had the .08 cent & .13 cent stamps mixed up.<BR>\n" );
document.write( ".18x+.08*2x+.13(x+3)=3.68<BR>\n" );
document.write( ".18x+.16x+.13x+.39=3.68<BR>\n" );
document.write( ".47x=3.68-.39<BR>\n" );
document.write( ".47x=3.29<BR>\n" );
document.write( "x=3.29/47<BR>\n" );
document.write( "x=7 18 cent stamps.<BR>\n" );
document.write( "2*7=14 8 cent stamps<BR>\n" );
document.write( "7+3=10 13 cent stamps.<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( ".18*7+.08*14+.13*10=3.68<BR>\n" );
document.write( "1.26+1.12+1.30=3.68<BR>\n" );
document.write( "3.68=3.68\r<BR>\n" );
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