document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=744499>Question 744499</A>: <I><SPAN STYLE=\"word-break: break-all;\"> mario is four years older than pedro the sum of their age is 40 how old are they </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #453349 by </B><A HREF=/tutors/aboutme.mpl?userid=lenny460><B>lenny460(1073)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lenny460><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=lenny460><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=453349\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Mario is four years older than Pedro. The sum of their age is 40. How old are they ?\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Let the age of Mario be n + 4\r<BR>\n" );
document.write( "\n" );
document.write( "Let the age of Pedro be n\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Therefore:\r<BR>\n" );
document.write( "\n" );
document.write( "n + 4 + n = 40\r<BR>\n" );
document.write( "\n" );
document.write( "2n + 4 = 40\r<BR>\n" );
document.write( "\n" );
document.write( "Subtract 4 from each side of the equation.\r<BR>\n" );
document.write( "\n" );
document.write( "2n = 36\r<BR>\n" );
document.write( "\n" );
document.write( "Divide each side by 2\r<BR>\n" );
document.write( "\n" );
document.write( "n = 18\r<BR>\n" );
document.write( "\n" );
document.write( "n + 4 = 18 + 4 = 22\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Answer:\r<BR>\n" );
document.write( "\n" );
document.write( "Mario is 22 years old and Pedro is 18 years old.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Lennox Obuong<BR>\n" );
document.write( "Algebra Tutor<BR>\n" );
document.write( "Nairobi, Kenya<BR>\n" );
document.write( "Email: obuong3@aol.com </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );