document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=875640>Question 875640</A>: <I><SPAN STYLE=\"word-break: break-all;\"> My 12 year old has this one for homework, I've seen it solved but can't explain it easily to them can you help? A mystery 2 digit number.<BR>\n" );
document.write( "When 2 is subtracted from it and the result is doubled we get the same two-digit number with its digits reversed. If the sum of the two digits is 13, find the value of the two digits. TRANSLATE THE ABOVE INFORMATION TO WRITE TWO EQUATIONS THEN TRY AND LINK THE TWO EQUATIONS TO SOLVE FOR THE UNKNOWNS.<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #528373 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=528373\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let n be the mystery number<BR>\n" );
document.write( "a is the 10's digit<BR>\n" );
document.write( "b is the one's digit<BR>\n" );
document.write( "10a+b=n,<BR>\n" );
document.write( "a+b=13,<BR>\n" );
document.write( "2(n-2)= 10b+a<BR>\n" );
document.write( "a = 4,   b = 9,   n = 49\r<BR>\n" );
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document.write( "we know that is is a number under 100<BR>\n" );
document.write( "the digits add up to 13<BR>\n" );
document.write( "4 9<BR>\n" );
document.write( "5 8<BR>\n" );
document.write( "6 7<BR>\n" );
document.write( "7 6 <BR>\n" );
document.write( "8 5 <BR>\n" );
document.write( "9 4\r<BR>\n" );
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