document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=694781>Question 694781</A>: <I><SPAN STYLE=\"word-break: break-all;\"> ten years ago,arun's father was four times older than his son.after ten years, the father will be twice older son. the present age of arun  find solution </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #428195 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=428195\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> ten years ago,arun's father was four times older than his son.after ten years, the father will be twice older son. the present age of arun.<BR>\n" );
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document.write( "Equatiion:<BR>\n" );
document.write( "f-10 = 4(s-10)<BR>\n" );
document.write( "f+10 = 2(s+10)<BR>\n" );
document.write( "--------<BR>\n" );
document.write( "Rearrange:<BR>\n" );
document.write( "f - 4s = -30<BR>\n" );
document.write( "f - 2s =  10<BR>\n" );
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document.write( "Subtract and solve for \"s\":<BR>\n" );
document.write( "2s = 40<BR>\n" );
document.write( "s = 20 yrs (son's age now)<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Solve for \"f\":<BR>\n" );
document.write( "f = 2s+10<BR>\n" );
document.write( "f = 40+10<BR>\n" );
document.write( "f = 50 yrs (father's age now)<BR>\n" );
document.write( "=================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );