document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=986341>Question 986341</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Melanie drives into the city to buy some new shoes. With traffic she only averages 15mph. On the way home it's much clearer so she averaged 35mph. If the total travel time is 2 hours how long did it take her to get to the store? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #607119 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=607119\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Melanie drives into the city to buy some new shoes. With traffic she only averages 15mph. On the way home it's much clearer so she averaged 35mph. If the total travel time is 2 hours how long did it take her to get to the store?<BR>\n" );
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document.write( "Avg speed of a round trip is:<BR>\n" );
document.write( "2*R1*R2/(R1 + R2)<BR>\n" );
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document.write( "Her avg speed is 2*15*35/(50) = 21 mi/hr<BR>\n" );
document.write( "RT distance = 2*21 = 42 miles--> 21 miles each way<BR>\n" );
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document.write( "Time going = 21/15 = 7/3 hrs = 2 hr 20 minutes<BR>\n" );
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