document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=273281>Question 273281</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 3.A knight wanted to visit a princess.<BR>\n" );
document.write( "He had to arrive at 5:00pm<BR>\n" );
document.write( "If he traveled at 15km per hour, he would arrive one hour too early<BR>\n" );
document.write( "If he traveled at 10km per hour, he would arrive one hour too late.<BR>\n" );
document.write( "At what time did he leave, what distance did he travel, and at what speed did he travel<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #199675 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=199675\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> He had to arrive at 5:00pm<BR>\n" );
document.write( "If he traveled at 15km per hour, he would arrive one hour too early<BR>\n" );
document.write( "If he traveled at 10km per hour, he would arrive one hour too late.<BR>\n" );
document.write( "At what time did he leave, what distance did he travel, and at what speed did he travel<BR>\n" );
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document.write( "Let d = distance traveled<BR>\n" );
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document.write( "Write an time equation; time = dist/speed<BR>\n" );
document.write( "Travel time at 10 km/hr - travel time at 15 km/h = 2 hrs<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2F10 ALIGN=MIDDLE  ALT=\"d%2F10\"   DISABLED_style= \"max-width:90%; height:auto;\" > - <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2F15 ALIGN=MIDDLE  ALT=\"d%2F15\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 2<BR>\n" );
document.write( "Multiply by 30<BR>\n" );
document.write( "3d - 2d = 30(2)<BR>\n" );
document.write( "d = 60 km is the distance<BR>\n" );
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document.write( "Find the travel time at 15 km/hr<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=60%2F15 ALIGN=MIDDLE  ALT=\"60%2F15\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 4 hrs<BR>\n" );
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document.write( "let s = speed required to get there on time<BR>\n" );
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document.write( "required travel time - 15km/hr travel time = 1<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=60%2Fs ALIGN=MIDDLE  ALT=\"60%2Fs\"   DISABLED_style= \"max-width:90%; height:auto;\" > - 4 = 1 hr<BR>\n" );
document.write( "60 - 4s = 1s<BR>\n" );
document.write( "60 = 1s + 4s<BR>\n" );
document.write( "60 = 5s<BR>\n" );
document.write( "s = 12 km/hr to arrive on time<BR>\n" );
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document.write( "Required travel time: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=60%2F12 ALIGN=MIDDLE  ALT=\"60%2F12\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 5 hrs<BR>\n" );
document.write( "He would have to leave at noon<BR>\n" );
document.write( ";<BR>\n" );
document.write( "Summarize, depart at noon, travel for 5 hrs at 12 km/hr, a dist of 60 km\r<BR>\n" );
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