document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=422551>Question 422551</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The tens digit of a 2-digit number is twice the units digit. The sum of the digits is 12. Find the original number. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #294933 by </B><A HREF=/tutors/aboutme.mpl?userid=sudhanshu_kmr><B>sudhanshu_kmr(1152)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=sudhanshu_kmr><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=sudhanshu_kmr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=294933\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "let unit digit = x, tens digit =2x\r<BR>\n" );
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document.write( "2x + x = 12\r<BR>\n" );
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document.write( "=> x =12/3 =4\r<BR>\n" );
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document.write( "so, original number is 84.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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