document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=708763>Question 708763</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Dingdong is 15 years older than Marian. Then years ago, he was twice as old as MArian. Find their age. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #436244 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=436244\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Dingdong is 15 years older than Marian. Ten years ago, he was twice as old as MArian. Find their ages.\r<BR>\n" );
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document.write( "Equations:<BR>\n" );
document.write( "d = m + 15<BR>\n" );
document.write( "d-10 = 2(m-10)<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Substitute for \"d\" and solve for \"m\":<BR>\n" );
document.write( "m+15 - 10 = 2m-20<BR>\n" );
document.write( "---<BR>\n" );
document.write( "m + 5 = 2m-20<BR>\n" );
document.write( "m = 25 (Marian's age now)<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "Solve for \"d\":<BR>\n" );
document.write( "d = m+15<BR>\n" );
document.write( "d = 25+15<BR>\n" );
document.write( "d = 40 (Dingdong's age now)_<BR>\n" );
document.write( "================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "============== </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );