document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=627413>Question 627413</A>: <I><SPAN STYLE=\"word-break: break-all;\"> From a point on a lake, two boats are driven in opposite directions, one at 9 mph and the other at 10 mph. In how many hours will they be 57 minutes apart? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #394943 by </B><A HREF=/tutors/aboutme.mpl?userid=hammy><B>hammy(9)</B></A><img src=\"/images/stars/stars-05.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=hammy><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=hammy><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=394943\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> d=rt<BR>\n" );
document.write( "t=d/r\r<BR>\n" );
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document.write( "So, the boat that travels 9mph will travel .15 miles per minute.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9%2F1%2A1%2F60=9%2F60=.15 ALIGN=MIDDLE  ALT=\"9%2F1%2A1%2F60=9%2F60=.15\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The boat that travels 10mph will travel .16 miles per minute.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=10%2F1%2A1%2F60=1%2F6=.16 ALIGN=MIDDLE  ALT=\"10%2F1%2A1%2F60=1%2F6=.16\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "So, in order to get 57 minutes, we must take each boat's time from the origin and add those times.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=T%281%29%2BT%282%29=57 ALIGN=MIDDLE  ALT=\"T%281%29%2BT%282%29=57\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=T=D%2FR ALIGN=MIDDLE  ALT=\"T=D%2FR\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=D%281%29%2FR%281%29%2BD%282%29%2FR%282%29=57 ALIGN=MIDDLE  ALT=\"D%281%29%2FR%281%29%2BD%282%29%2FR%282%29=57\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "R(1)=.15 miles per minute<BR>\n" );
document.write( "R(2)=.16 miles per minute<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=D%281%29%2F.15%2BD%282%29%2F.16=57 ALIGN=MIDDLE  ALT=\"D%281%29%2F.15%2BD%282%29%2F.16=57\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.16%2AD%281%29%2B.15%2AD%282%29=1.368 ALIGN=MIDDLE  ALT=\".16%2AD%281%29%2B.15%2AD%282%29=1.368\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=D%281%29=.15%2AT ALIGN=MIDDLE  ALT=\"D%281%29=.15%2AT\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=D%282%29=.16%2AT ALIGN=MIDDLE  ALT=\"D%282%29=.16%2AT\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.16%2A.15%2AT%2B.15%2A.16%2AT=1.368 ALIGN=MIDDLE  ALT=\".16%2A.15%2AT%2B.15%2A.16%2AT=1.368\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.048%2AT=1.368 ALIGN=MIDDLE  ALT=\".048%2AT=1.368\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "T=28.5 minutes<BR>\n" );
document.write( "But we want hours, so .475 hours<BR>\n" );
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