document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1175217>Question 1175217</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Brantley and shawna walk to grandmas house at a rate of 4mi/hr. They ride their bicycles back at 8 mi/hr over the same route that they walked, it takes 1hr longer to walk then ride. How long did it take them to walk to grandmas  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #800798 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13200)</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=800798\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "Pay attention to the response from tutor @ikleyn, in which she shows an informal solution in addition to a formal algebraic solution.<br><BR>\n" );
document.write( "The process for solving the problem using formal algebra is well defined.  Solving the problem by that method will not require a lot of thinking -- you just follow the well-defined algebraic steps.<br><BR>\n" );
document.write( "On the other hand, solving the problem informally, by using logical reasoning and mental arithmetic, will give you MUCH BETTER exercise for your brain.  That mental exercise will help prepare you for solving problems in the future -- not only in mathematics, but in life in general.<br><BR>\n" );
document.write( "So when you see a problem like this, before you plunge into a solution using formal algebra, give yourself the benefit of taking a few moments to try reasoning out a solution informally.<br><BR>\n" );
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