document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=448913>Question 448913</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Ken can climb a coconut tree at the rate of 10 ft. per minute and return at 20 ft. per<BR>\n" );
document.write( "minute. If it took him 3 minutes to climb and return, what is the height of the coconut tree? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #308822 by </B><A HREF=/tutors/aboutme.mpl?userid=htmentor><B>htmentor(1343)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=htmentor><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=htmentor><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=308822\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Given: total time = 3 min.<BR>\n" );
document.write( "Let h = the height of the tree<BR>\n" );
document.write( "Since time = distance/rate, we can write the following equation for the total<BR>\n" );
document.write( "time up and down the tree:<BR>\n" );
document.write( "h/10 + h/20 = 3<BR>\n" );
document.write( "Solve for h:<BR>\n" );
document.write( "(2h+h)/20 = 3<BR>\n" );
document.write( "3h = 60<BR>\n" );
document.write( "h = 20<BR>\n" );
document.write( "Therefore, the height of the tree = 20 ft. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );