document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=208160>Question 208160</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/9780133659474/algebrahomeworkh></A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> michaek drove to a friends house at a rate of 40 mph. he returned the same route at a rate of 45 mph. the driving time for the round trip was 4 hours. what was the distance michael traveled? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #157479 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=157479\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> michaek drove to a friends house at a rate of 40 mph.<BR>\n" );
document.write( " he returned the same route at a rate of 45 mph.<BR>\n" );
document.write( " the driving time for the round trip was 4 hours.<BR>\n" );
document.write( " what was the distance michael traveled?<BR>\n" );
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document.write( "let d = one way distance<BR>\n" );
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document.write( "Write a time equation: Time = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=dist%2Fspeed ALIGN=MIDDLE  ALT=\"dist%2Fspeed\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Go time + return time = 4 hrs<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2F40 ALIGN=MIDDLE  ALT=\"d%2F40\"   DISABLED_style= \"max-width:90%; height:auto;\" > + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2F45 ALIGN=MIDDLE  ALT=\"d%2F45\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 4<BR>\n" );
document.write( "Multiply equation by 360 to get rid of the denominators, results:<BR>\n" );
document.write( "9d + 8d = 4(360)<BR>\n" );
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document.write( "17d = 1440<BR>\n" );
document.write( "d = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1440%2F17 ALIGN=MIDDLE  ALT=\"1440%2F17\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "d = 84.7 mi one way<BR>\n" );
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document.write( "then total dist:<BR>\n" );
document.write( "2*84.7 = 169.4 mi<BR>\n" );
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document.write( "Check solution by finding the times<BR>\n" );
document.write( "84.7/40 = 2.1175<BR>\n" );
document.write( "84.7/45 = 1.8822<BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "totaltime 3.9997 ~ 4 hrs<BR>\n" );
document.write( " </SPAN>\n" );
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