document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1134632>Question 1134632</A>: <I><SPAN STYLE=\"word-break: break-all;\"> if a man walks a distance at 3 mph and jogs back the same route at 5 mph and the trip takes  one hour  how many miles did he travel </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #752096 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=752096\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> if a man walks a distance at 3 mph and jogs back the same route at 5 mph and the trip takes  one hour  how many miles did he travel<BR>\n" );
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document.write( "Avg speed for a round trip = 2*R1*R2/(R1 + R2)  where R1 and R2 are the 2 speeds.<BR>\n" );
document.write( "The distance is not relevant if they are equal.<BR>\n" );
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document.write( "Avg speed = 2*3*5/(3+5) = 30/8 = 3.75 mi/hr<BR>\n" );
document.write( "--> 3.75 miles round trip<BR>\n" );
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document.write( "This is the basis of the famous Michelson-Morley experiment in the mid-17th century that disproved the existence of the \"ether.\"<BR>\n" );
document.write( "google it.<BR>\n" );
document.write( "Learn something.\r<BR>\n" );
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