document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=520269>Question 520269</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Tom travels 60 miles per hour going to a neighboring city and 50 miles per hour coming back using the same road. He drove a total of 5 hours away and back. What is the distance from Tom's house to the city he visited? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #346008 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=346008\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Tom travels 60 miles per hour going to a neighboring city and 50 miles per hour coming back using the same road. He drove a total of 5 hours away and back. What is the distance from Tom's house to the city he visited?<BR>\n" );
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document.write( "The avg speed of the round trip is<BR>\n" );
document.write( "2*60*50/(60 + 50) = 6000/110 mi/hr<BR>\n" );
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document.write( "This is similar to parallel resistors or parallel flows, but x2<BR>\n" );
document.write( "Note that the avg speed is not 55 because more time is spent going 50 mi/hr.<BR>\n" );
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document.write( "= 600/11 mi/hr<BR>\n" );
document.write( "d = r*t = 5*(600/11) miles round-trip<BR>\n" );
document.write( "d = 1500/11 miles one-way<BR>\n" );
document.write( "d =~ 136.4 miles\r<BR>\n" );
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document.write( " </SPAN>\n" );
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