document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=963224>Question 963224</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I have absolutely no idea how to solve this problem. I have a few other distance problems on my homework assignment and I didn't have too much trouble with them, I just have no idea how to do this one:<BR>\n" );
document.write( "Nina went to the college traveling 6 mph and returned home traveling 12 mph. If the total trip took 9 hours, how long did Nina travel at each speed? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #588462 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=588462\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Nina went to the college traveling 6 mph and returned home traveling 12 mph. If the total trip took 9 hours, how long did Nina travel at each speed?<BR>\n" );
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document.write( "Avg speed of a round trip = 2*r1*r2/(r1+r1)  - r1 and r2 are the 2 speeds<BR>\n" );
document.write( "Avg = 2*6*12/(6+12) = 8 mi/hr<BR>\n" );
document.write( "RT distance = 8*9 = 72 miles --> 36 miles each way.<BR>\n" );
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document.write( "t = d/r<BR>\n" );
document.write( "t = 36/6 = 6 hours going<BR>\n" );
document.write( "t = 3 hours returning </SPAN>\n" );
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