document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=257187>Question 257187</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Mary was 4 times as old as Ann 10 years ago.if she is now twice as old as Ann, how old is mary </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #189268 by </B><A HREF=/tutors/aboutme.mpl?userid=dabanfield><B>dabanfield(803)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=dabanfield><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=189268\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Mary was 4 times as old as Ann 10 years ago.if she is now twice as old as Ann, how old is mary\r<BR>\n" );
document.write( "\n" );
document.write( "Let M be Mary's age today. Let A be Ann's age today.\r<BR>\n" );
document.write( "\n" );
document.write( "Then we have:\r<BR>\n" );
document.write( "\n" );
document.write( "1) M-10 = 4*(A-10) and<BR>\n" );
document.write( "2) M = 2*A  or A = M/2 \r<BR>\n" );
document.write( "\n" );
document.write( "Substititute A= M/2 in the first equation and solve for M. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );