document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=676400>Question 676400</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A sailboat departed from an island and traveled north for 2 hours, then east for 1 and 1/2 hours all at the same speed.  At the end of the trip the boat was 20 miles from where it started.  At what speed did the boat travel? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #420340 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=420340\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A sailboat departed from an island and traveled north for 2 hours, then east<BR>\n" );
document.write( " for 1 and 1/2 hours all at the same speed. <BR>\n" );
document.write( "At the end of the trip the boat was 20 miles from where it started.<BR>\n" );
document.write( " At what speed did the boat travel?<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Let s = speed of the boat<BR>\n" );
document.write( ":<BR>\n" );
document.write( "This is a pythag problem: a^2 + b^2 = c^2, where<BR>\n" );
document.write( "a = the distance travel north after 2 hrs<BR>\n" );
document.write( "b = the distance travel east after 1.5 hrs<BR>\n" );
document.write( "c = 20 mi<BR>\n" );
document.write( ": <BR>\n" );
document.write( "(2s)^2 + (1.5s)^2 = 20^2<BR>\n" );
document.write( "4s^2 + 2.25s^2 = 400<BR>\n" );
document.write( "6.25s^2 = 400<BR>\n" );
document.write( "s^2 = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=400%2F6.25 ALIGN=MIDDLE  ALT=\"400%2F6.25\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "s^2 = 64<BR>\n" );
document.write( "s = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%2864%29 ALIGN=MIDDLE  ALT=\"sqrt%2864%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "s = 8 mph is the boat speed<BR>\n" );
document.write( ":<BR>\n" );
document.write( ":<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );