document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=541001>Question 541001</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a teacher is four times as old as a student. in 30 years, the students age will be half of the teachers age. How old are they now? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #353968 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=353968\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a teacher is four times as old as a student. in 30 years, the students age will be half of the teachers age. How old are they now<BR>\n" );
document.write( "..<BR>\n" );
document.write( "let x=student's current age<BR>\n" );
document.write( "4x=teacher's current age<BR>\n" );
document.write( "30 years hence<BR>\n" );
document.write( "student's age=x+30<BR>\n" );
document.write( "teacher's age=4x+30<BR>\n" );
document.write( "(x+30)/(4x+30)=1/2<BR>\n" );
document.write( "2x+60=4x+30<BR>\n" );
document.write( "2x=30<BR>\n" );
document.write( "x=15<BR>\n" );
document.write( "ans:<BR>\n" );
document.write( "student's current age=15<BR>\n" );
document.write( "teacher's current age=60 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );