document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=535335>Question 535335</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a man when asked by his niece how old he was, he replied, My age is now 4x yours, but 5yrs ago it was 5x yours. (he is 80 but how do you solve it)<BR>\n" );
document.write( "uncle's age = u , niece's age = n<BR>\n" );
document.write( "u = 4n ...(i)<BR>\n" );
document.write( "u-5 = 5(n-5) ...(ii) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #351861 by </B><A HREF=/tutors/aboutme.mpl?userid=amalialaila><B>amalialaila(3)</B></A><img src=\"/images/stars/iconNewId_16x16.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=amalialaila><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=351861\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> substitute equation (i) to (ii)<BR>\n" );
document.write( "4n-5 = 5(n-5)<BR>\n" );
document.write( "4n-5 = 5n-25<BR>\n" );
document.write( "4n-5n= -25+5<BR>\n" );
document.write( "-n   = -20   --> multiply -1<BR>\n" );
document.write( "n    = 20<BR>\n" );
document.write( "substitute the niece's age to equation(i): u=4n, and we will get that uncle's age was 80, as told.<BR>\n" );
document.write( "u = 4n<BR>\n" );
document.write( "u = 4(20)<BR>\n" );
document.write( "u = 80 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );