document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1100600>Question 1100600</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I have to make up an equation, using simultaneous equations, according to this question; <BR>\n" );
document.write( "A father is 26 years older than his daughter. In 4 years, he will be 2 more than 5 times her age. Find out both their age.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #715121 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13216)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=715121\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br>Tutor ikleyn has supplied a good solution using two variables.<br><BR>\n" );
document.write( "I personally find it easier to solve problems using algebra if I can set up the problem using only one variable.<br><BR>\n" );
document.write( "If you are just now learning to solve problems like this using algebra, you should practice using both methods to find out which one \"works\" better for you.<br><BR>\n" );
document.write( "Here is my solution using a single variable.<br><BR>\n" );
document.write( "let d be the daughter's age<BR>\n" );
document.write( "then d+26 is the father's age  (\"A father is 26 years older than his daughter\")<br><BR>\n" );
document.write( "\"In 4 years, he will be 2 more than 5 times her age\"<br><BR>\n" );
document.write( "We can restate this as \"the father's age in 4 years will be 2 more than 5 times his daughter's age then\".<br><BR>\n" );
document.write( "The daughter's age in 4 years will be d+4; the father's age in 4 years will be d+30.  So<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2B30+=+5%28d%2B4%29%2B2%29 ALIGN=MIDDLE  ALT=\"d%2B30+=+5%28d%2B4%29%2B2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2B30+=+5d%2B22 ALIGN=MIDDLE  ALT=\"d%2B30+=+5d%2B22\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4d+=+8 ALIGN=MIDDLE  ALT=\"4d+=+8\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d+=+2 ALIGN=MIDDLE  ALT=\"d+=+2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "The daughter's age is d=2; the father's age is d+26 = 28.<br><BR>\n" );
document.write( "You can see that the calculations we end up doing are the same with either method; we just get there by a different path. </SPAN>\n" );
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