document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=433029>Question 433029</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A boat traveled 210 miles downstream and back. The trip downstream took 10 hours. The trip back took 70 hours. What is the speed of the boat in still water? What is the speed of the current? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #300158 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=300158\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Here's a similar example.<BR>\n" );
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document.write( "A plane flew 720 miles in 3 hours with a tailwind. It would take 4 hours to travel the same distance with a headwind. Find the speed of the plane in still air and speed of wind.<BR>\n" );
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document.write( "720/3 = 240 mph<BR>\n" );
document.write( "720/4 = 180 mph<BR>\n" );
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document.write( "The airspeed is the average (240 + 180)/2 = 210 mph<BR>\n" );
document.write( "The windspeed is the difference = 30 mph<BR>\n" );
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