document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=490521>Question 490521</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A person takes a trip, driving with a constant<BR>\n" );
document.write( "speed 87.3 km/h except for a 27.4 min rest<BR>\n" );
document.write( "stop.<BR>\n" );
document.write( "If the person’s average speed is 74.6 km/h,<BR>\n" );
document.write( "how much time is spent on the trip?<BR>\n" );
document.write( "Answer in units of h<BR>\n" );
document.write( "How far does the person travel?<BR>\n" );
document.write( "Answer in units of km </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #334304 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=334304\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A person takes a trip, driving with a constant speed 87.3 km/h except for a 27.4 min rest stop.<BR>\n" );
document.write( "If the person’s average speed is 74.6 km/h,how much time is spent on the trip?<BR>\n" );
document.write( "Answer in units of hr<BR>\n" );
document.write( "How far does the person travel?<BR>\n" );
document.write( "Answer in units of km<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Since they want the solution in units of hrs and km, we should be able to round off these annoying decimals<BR>\n" );
document.write( "87.3 = 87 km<BR>\n" );
document.write( "74.6 = 75 km<BR>\n" );
document.write( "27.4 = 27 min, which is: 27/60 = .45 hrs<BR>\n" );
document.write( ":<BR>\n" );
document.write( "let d = the distance traveled<BR>\n" );
document.write( ":<BR>\n" );
document.write( "A simple time equation; Time = dist/speed<BR>\n" );
document.write( "time at 87km/h + rest time = total time<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2F87 ALIGN=MIDDLE  ALT=\"d%2F87\"   DISABLED_style= \"max-width:90%; height:auto;\" > + .45 = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2F75 ALIGN=MIDDLE  ALT=\"d%2F75\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "multiply equation by 87*75 = 6525, results<BR>\n" );
document.write( "75d + 6525(.45) = 87d<BR>\n" );
document.write( "75d + 2936 = 87s<BR>\n" );
document.write( "2936 = 87d - 75d<BR>\n" );
document.write( "2936 = 12d<BR>\n" );
document.write( "d = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2936%2F12 ALIGN=MIDDLE  ALT=\"2936%2F12\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "d = 245 km<BR>\n" );
document.write( "find the time spent on the trip<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=245%2F87 ALIGN=MIDDLE  ALT=\"245%2F87\"   DISABLED_style= \"max-width:90%; height:auto;\" > + .45 =<BR>\n" );
document.write( "2.8 + .45 = 3.25 hrs<BR>\n" );
document.write( "Check using the av speed<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=245%2F75 ALIGN=MIDDLE  ALT=\"245%2F75\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 3.27 hrs, close enough </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );