document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=546536>Question 546536</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me solve this \r<BR>\n" );
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document.write( "The sum of the present ages of two sisters Ling and Mei is 44 years.4 years ago Ling was thrice as old as Mei .Find their present ages. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #356037 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=356037\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Ling x years<BR>\n" );
document.write( "Mei --- y years\r<BR>\n" );
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document.write( "x+y=44...................(1)\r<BR>\n" );
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document.write( "4 years ago <BR>\n" );
document.write( "ling = x-4<BR>\n" );
document.write( "Mei = y-4\r<BR>\n" );
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document.write( "(x-4)=3(y-4)<BR>\n" );
document.write( "x-4 = 3y-12<BR>\n" );
document.write( "x-3y=-8...................(2)\r<BR>\n" );
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document.write( "Multiply (1) by 3<BR>\n" );
document.write( "3x+3y=132\r<BR>\n" );
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document.write( "add it to (2)<BR>\n" );
document.write( "4x=124<BR>\n" );
document.write( "/4<BR>\n" );
document.write( "x=31 lings age<BR>\n" );
document.write( "Mei's age = 44-31=13 </SPAN>\n" );
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