document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=879480>Question 879480</A>: <I><SPAN STYLE=\"word-break: break-all;\"> You wake up late and drive to work averaging 60 mph to make it on time. You drive home along the same route averaging 40 mph.\r<BR>\n" );
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document.write( "a) Explain why d=rt \r<BR>\n" );
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document.write( "b) Explain why your average speed for the entire round trip is NOT 50mph \r<BR>\n" );
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document.write( "c) If it took you 24minutes to get to work, how far is the commute? \r<BR>\n" );
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document.write( "d) How long did it take you to drive home? \r<BR>\n" );
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document.write( "e) Find the correct average speed for the entire trip. \r<BR>\n" );
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document.write( "f) Find a general formula for claculating the average speed if you average r1 mph for t1 hours and then average r2 mph for t2hours. Give an appropriate definition for average speed. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #530821 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><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=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=530821\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a) d = rt = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28mph%29%28hrs%29+=+mi ALIGN=MIDDLE  ALT=\"%28mph%29%28hrs%29+=+mi\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "b) average Total Distance/Total time = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28r%5B1%5Dt%5B1%5D+%2B+r%5B2%5Dt%5B2%5D%29%2F%28t%5B1%5D+%2B+t%5B2%5D%29 ALIGN=MIDDLE  ALT=\"%28r%5B1%5Dt%5B1%5D+%2B+r%5B2%5Dt%5B2%5D%29%2F%28t%5B1%5D+%2B+t%5B2%5D%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "c) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%2860mph%29%2824%2F60%29 ALIGN=MIDDLE  ALT=\"%2860mph%29%2824%2F60%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 24mi<BR>\n" );
document.write( "d) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=24mi%2F%2840mph%29 ALIGN=MIDDLE  ALT=\"24mi%2F%2840mph%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = .6hr<BR>\n" );
document.write( "e) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=48mi%2F%28.4+%2B+.6%29 ALIGN=MIDDLE  ALT=\"48mi%2F%28.4+%2B+.6%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 48mph average<BR>\n" );
document.write( "f) average Speed = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28r%5B1%5Dt%5B1%5D+%2B+r%5B2%5Dt%5B2%5D%29%2F%28t%5B1%5D+%2B+t%5B2%5D%29 ALIGN=MIDDLE  ALT=\"%28r%5B1%5Dt%5B1%5D+%2B+r%5B2%5Dt%5B2%5D%29%2F%28t%5B1%5D+%2B+t%5B2%5D%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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