document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=976750>Question 976750</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The last digit is the double of the first digit<BR>\n" );
document.write( "The second and third digit are same<BR>\n" );
document.write( "Third and fourth digit make the number which is twice<BR>\n" );
document.write( "the number in the first and second digit and it would be a number plate </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #598591 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=598591\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Four digits a, b, c, d<BR>\n" );
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document.write( "Write an equation for each statement:<BR>\n" );
document.write( " The last digit is the double of the first digit.<BR>\n" );
document.write( "d = 2a<BR>\n" );
document.write( " The second and third digit are same.<BR>\n" );
document.write( "b = c<BR>\n" );
document.write( " Third and fourth digit make the number which is twice the number in the first and second digit.<BR>\n" );
document.write( "10c + d = 2(10a + b)<BR>\n" );
document.write( "10c + d = 20a + 2b<BR>\n" );
document.write( "Replace b with c, replace d with 2a<BR>\n" );
document.write( "10c + 2a = 20a + 2c<BR>\n" );
document.write( "10c - 2c = 20a - 2a<BR>\n" );
document.write( "8c = 18a<BR>\n" );
document.write( "4c = 9a<BR>\n" );
document.write( "c = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9%2F4 ALIGN=MIDDLE  ALT=\"9%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" >a<BR>\n" );
document.write( "only one single digit integer solution to this<BR>\n" );
document.write( "a = 4, then c = 9<BR>\n" );
document.write( "therefore<BR>\n" );
document.write( "b = 9<BR>\n" );
document.write( "and<BR>\n" );
document.write( "d = 2(4) = 8<BR>\n" );
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document.write( "and it would be a number plate: 4998<BR>\n" );
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document.write( "We can confirm this in the last statement: 98 = 2(49) </SPAN>\n" );
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