document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=514928>Question 514928</A>: <I><SPAN STYLE=\"word-break: break-all;\"> three years ago father was 7 times as old as his son three year hence the fathers age would be 4 times that of his son what is the present age of his father </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #343628 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=343628\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> three years ago father was 7 times as old as his son three year hence the fathers age would be 4 times that of his son what is the present age of his father<BR>\n" );
document.write( "**<BR>\n" );
document.write( "let x=father's present age<BR>\n" );
document.write( "let y=son's age 3 yrs ago<BR>\n" );
document.write( "..<BR>\n" );
document.write( "3 years ago:<BR>\n" );
document.write( "father's age=(x-3)<BR>\n" );
document.write( "(x-3)/y=7<BR>\n" );
document.write( "..<BR>\n" );
document.write( "3 years hence:<BR>\n" );
document.write( "father's age=(x+3)<BR>\n" );
document.write( "son's age=(y+6)<BR>\n" );
document.write( "(x+3)/(y+6)=4<BR>\n" );
document.write( "..<BR>\n" );
document.write( "Equations:<BR>\n" );
document.write( "x-3=7y<BR>\n" );
document.write( "x+3=4(y+6)=4y+24<BR>\n" );
document.write( "x-21=4y<BR>\n" );
document.write( "18=3y<BR>\n" );
document.write( "y=6<BR>\n" );
document.write( "x=7y+3=42+3=45<BR>\n" );
document.write( "ans:<BR>\n" );
document.write( "present age of father=45 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );