document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=697872>Question 697872</A>: <I><SPAN STYLE=\"word-break: break-all;\"> the sum of the ages of two persons A and B is 50. 5 years ago,the ratio of their ages was 5/3. the present age of A and B are<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #430307 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=430307\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the sum of the ages of two persons A and B is 50. 5 years ago,the ratio of their ages was 5/3. the present age of A and B are<BR>\n" );
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document.write( "Equations:<BR>\n" );
document.write( "a + b = 50<BR>\n" );
document.write( "(a-5)/(b-5) = 5/3<BR>\n" );
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document.write( "Substitute for \"a\" and solve for \"b\":<BR>\n" );
document.write( "a = 50-b<BR>\n" );
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document.write( "(50-b-5)/(b-5) = 5/3<BR>\n" );
document.write( "----<BR>\n" );
document.write( "3(45-b) = 5(b-5)<BR>\n" );
document.write( "135 - 3b = 5b - 25<BR>\n" );
document.write( "8b = 160<BR>\n" );
document.write( "b = 20<BR>\n" );
document.write( "Then a = 30<BR>\n" );
document.write( "===============<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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