document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=693151>Question 693151</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Mr. Munch is twice as old as his daughter. In two years, he will be four times as old as his daughter was fifteen years ago. How old are they now?<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #427291 by </B><A HREF=/tutors/aboutme.mpl?userid=DrBeeee><B>DrBeeee(684)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=DrBeeee><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=427291\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let M = Mr. Munch's present age<BR>\n" );
document.write( "Let D = his daughter's present age.<BR>\n" );
document.write( "The problem statement gives use two equations<BR>\n" );
document.write( "(1) M = 2*D and<BR>\n" );
document.write( "(2) M + 2 = 4*(D - 15)<BR>\n" );
document.write( "To solve, substitute (1) into (2) to get<BR>\n" );
document.write( "(3) 2*D + 2 = 4*D - 60 or<BR>\n" );
document.write( "(4) 2*D = 62 or<BR>\n" );
document.write( "(5) D = 31, then using (1) we get<BR>\n" );
document.write( "(6) M = 62<BR>\n" );
document.write( "Check these answers with (2).<BR>\n" );
document.write( "Is (62 + 2 = 4*(31 - 15))?<BR>\n" );
document.write( "Is (64 = 4*16)?<BR>\n" );
document.write( "Is (64 = 64)? Yes<BR>\n" );
document.write( "Answer: Mr. Munch is 62 and his daughter is 31. </SPAN>\n" );
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