document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=192789>Question 192789</A>: <I><SPAN STYLE=\"word-break: break-all;\"> My question is: Marys father is 4 times as old as Mary and 5 years ago he was 7 times as old. How old is each now? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #144690 by </B><A HREF=/tutors/aboutme.mpl?userid=Mathtut><B>Mathtut(3670)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Mathtut><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=144690\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let m and f be ages of mary and mary's father<BR>\n" );
document.write( ":<BR>\n" );
document.write( "f=4m..........eq 1<BR>\n" );
document.write( "f-5=7(m-5)....eq 2<BR>\n" );
document.write( ":<BR>\n" );
document.write( "take f's value from eq 1 and plug it into eq 2<BR>\n" );
document.write( ":<BR>\n" );
document.write( "4m-5=7m-35<BR>\n" );
document.write( ":<BR>\n" );
document.write( "3m=30<BR>\n" );
document.write( ":<BR>\n" );
document.write( "m=10<BR>\n" );
document.write( ":<BR>\n" );
document.write( "f=4m=4(10)=40<BR>\n" );
document.write( ":<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );