document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=100321>Question 100321</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Erynn walked at a constant rate for 2 hours and bicycled at three times that rate for 1/3 hours. She traveled 12km in all. What was her walking rate?\r<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 #73072 by </B><A HREF=/tutors/aboutme.mpl?userid=TP><B>TP(29)</B></A><img src=\"/images/stars/stars-07.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=TP><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=73072\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let the walking rate be x(km/h).\r<BR>\n" );
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document.write( "This means that after 1 hour she has walked x km.<BR>\n" );
document.write( "So after 2 hours she will have walked 2x km.\r<BR>\n" );
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document.write( "We are told that she then cycles at three times her walking rate.<BR>\n" );
document.write( "This means that her cycling rate =3*x=3x(km/h).<BR>\n" );
document.write( "But we are told that she only cycles for 1/3 of an hour and so her cycling distance is 1/3 of 3x km. which is 1x or x km.\r<BR>\n" );
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document.write( "So she walks 2x km and cycles x km,giving a total travelling distance of 3x km. \r<BR>\n" );
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document.write( "But we are told that the total distance travelled is 12km.\r<BR>\n" );
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document.write( "                          Hence 3x=12.\r<BR>\n" );
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document.write( "Now share each side of this equation by 3 and we get:\r<BR>\n" );
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document.write( "                                 x=4.\r<BR>\n" );
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document.write( "So her walking rate is 4km/h.ANS<BR>\n" );
document.write( "(NB. In English English we usually say \"cycled\" rather than \"bicycled\" and we spell the US \"traveled\" as \"travelled\"!).\r<BR>\n" );
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