document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=234276>Question 234276</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me solve this word problem:\r<BR>\n" );
document.write( "\n" );
document.write( "John's present age is three-fourths of Sally's present age. In five years, John's age will be four-fifths of Sarah's age at that time. What are the present ages of John and Sally?\r<BR>\n" );
document.write( "\n" );
document.write( "----- Thank you =)<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #172772 by </B><A HREF=/tutors/aboutme.mpl?userid=Earlsdon><B>Earlsdon(6294)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Earlsdon><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=172772\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let J = John's present age and S = Sally's present age.<BR>\n" );
document.write( "1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=J+=+%283%2F4%29S ALIGN=MIDDLE  ALT=\"J+=+%283%2F4%29S\"   DISABLED_style= \"max-width:90%; height:auto;\" > \"John's present age is three-fourths of Sally's present age.\"<BR>\n" );
document.write( "2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=J%2B5+=%284%2F5%29%28S%2B5%29 ALIGN=MIDDLE  ALT=\"J%2B5+=%284%2F5%29%28S%2B5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > \"In five years, John's age will be four-fifths of Sally's (not Sarah's) age at that time.\"<BR>\n" );
document.write( "Substitute <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=J+=+%283%2F4%29S ALIGN=MIDDLE  ALT=\"J+=+%283%2F4%29S\"   DISABLED_style= \"max-width:90%; height:auto;\" > into equation 2) and solve for S.<BR>\n" );
document.write( "2a) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%283%2F4%29S%2B5+=+%284%2F5%29%28S%2B5%29 ALIGN=MIDDLE  ALT=\"%283%2F4%29S%2B5+=+%284%2F5%29%28S%2B5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Multiply through by the LCD of 20 to clear the fractions.<BR>\n" );
document.write( "2b) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=15S%2B100+=+16%28S%2B5%29 ALIGN=MIDDLE  ALT=\"15S%2B100+=+16%28S%2B5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "2c) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=15S%2B100+=+16S%2B80 ALIGN=MIDDLE  ALT=\"15S%2B100+=+16S%2B80\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "2d) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=20+=+S ALIGN=MIDDLE  ALT=\"20+=+S\"   DISABLED_style= \"max-width:90%; height:auto;\" > and...<BR>\n" );
document.write( "1a) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=J+=+%283%2F4%29%2820%29 ALIGN=MIDDLE  ALT=\"J+=+%283%2F4%29%2820%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "1b) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=J+=+15 ALIGN=MIDDLE  ALT=\"J+=+15\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Sally's present age is 20 and John's present age is 15. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );