document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=705983>Question 705983</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hayley paddles her kayak at a speed of 9 km/h. Every morning she paddles 10 km down the river by her house and back<BR>\n" );
document.write( "Write an equation that represents Hayley's total paddling time t, where x is the speed of the river's current. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #434912 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=434912\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hayley paddles her kayak at a speed of 9 km/h. Every morning she paddles 10 km down the river by her house and back<BR>\n" );
document.write( "Write an equation that represents Hayley's total paddling time t, where x is the speed of the river's current.<BR>\n" );
document.write( "**<BR>\n" );
document.write( "let x=speed of current in km/hr<BR>\n" );
document.write( "let t=total paddling time in hrs<BR>\n" );
document.write( "given speed of kayak=9<BR>\n" );
document.write( "speed of kayak downstream=(9+x)<BR>\n" );
document.write( "speed of kayak uptream=(9-x)<BR>\n" );
document.write( "travel time=distance/speed (for downstream and upstream)<BR>\n" );
document.write( "t=10/(9+x)+10/(9-x)<BR>\n" );
document.write( "t=10(9-x)+10(9+x)<BR>\n" );
document.write( "t=[90-10x+90+10x]/(9+x)(9-x)<BR>\n" );
document.write( "t=180/(9+x)(9-x) </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );