document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=514323>Question 514323</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a man is seven times as old as his son. Ten years from now, he will be three times as old as his son. how old is he now? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #344092 by </B><A HREF=/tutors/aboutme.mpl?userid=Maths68><B>Maths68(1474)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Maths68><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=Maths68><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=344092\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let<BR>\n" );
document.write( "Present age of Man = m<BR>\n" );
document.write( "Present age of Son = s<BR>\n" );
document.write( "A man is sevn times as old as his son.<BR>\n" );
document.write( "m=7s........(1)<BR>\n" );
document.write( "Ten year from now<BR>\n" );
document.write( "m+10=s+10<BR>\n" );
document.write( "He will be three times as old as his son<BR>\n" );
document.write( "m+10=3(s+10)<BR>\n" );
document.write( "m+10=3s+30<BR>\n" );
document.write( "m=3s+30-10<BR>\n" );
document.write( "m=3s+20........(2)<BR>\n" );
document.write( "Subtitute the value of m from (1) to (2)<BR>\n" );
document.write( "7s=3s+20<BR>\n" );
document.write( "7s-3s=20<BR>\n" );
document.write( "4s=20<BR>\n" );
document.write( "4s/4=20/4<BR>\n" );
document.write( "s=5<BR>\n" );
document.write( "Put the value of s in (1)<BR>\n" );
document.write( "m=7s<BR>\n" );
document.write( "m=7(5)<BR>\n" );
document.write( "m=35<BR>\n" );
document.write( "Present age of Man = m = 35<BR>\n" );
document.write( "Present age of Son = s = 5 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );