document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=774712>Question 774712</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Four men want to cross a bridge at night. They only have 17 minutes of flashlight battery, and it needs to be carried back and forth across the bridge (can't be thrown). The bridge is a width such that a maximum of 2 people can cross at a time. One man takes 10 minutes, another takes 5 minutes, another takes 2 minutes, and the last takes 1 minutes to cross. In what order will they have to cross to get everyone across the bridge before 17 minutes is up?? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #472494 by </B><A HREF=/tutors/aboutme.mpl?userid=KMST><B>KMST(5328)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=KMST><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=KMST><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=472494\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Send the two fastest guys first.<BR>\n" );
document.write( "That first trip across would take <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2 ALIGN=MIDDLE  ALT=\"2\"   DISABLED_style= \"max-width:90%; height:auto;\" > minutes.<BR>\n" );
document.write( "Next, send one of them back with the flashlight. It does not matter which one.<BR>\n" );
document.write( "The fast guy that goes back hands the flashlight over to the slow guys.<BR>\n" );
document.write( "Next, the two slow guys cross together, using another <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=10 ALIGN=MIDDLE  ALT=\"10\"   DISABLED_style= \"max-width:90%; height:auto;\" > minutes of battery use.<BR>\n" );
document.write( "After they cross, the slow guys hand the flashlight to the other fast guy at the other side.<BR>\n" );
document.write( "That fast gut goes back to pick up his fast friend, and they cross together in <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2 ALIGN=MIDDLE  ALT=\"2\"   DISABLED_style= \"max-width:90%; height:auto;\" > minutes.<BR>\n" );
document.write( "The three trips in the right direction take <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=14 ALIGN=MIDDLE  ALT=\"14\"   DISABLED_style= \"max-width:90%; height:auto;\" > minutes:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2B10%2B2=14 ALIGN=MIDDLE  ALT=\"2%2B10%2B2=14\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The two trips back to bring the flashlight are done by the two fast guys and take a total of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3 ALIGN=MIDDLE  ALT=\"3\"   DISABLED_style= \"max-width:90%; height:auto;\" > minutes:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2B1=3 ALIGN=MIDDLE  ALT=\"2%2B1=3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The total time crossing back and forth is<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=14 ALIGN=MIDDLE  ALT=\"14\"   DISABLED_style= \"max-width:90%; height:auto;\" > minutes + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3 ALIGN=MIDDLE  ALT=\"3\"   DISABLED_style= \"max-width:90%; height:auto;\" > minutes = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=17 ALIGN=MIDDLE  ALT=\"17\"   DISABLED_style= \"max-width:90%; height:auto;\" > minutes<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );