document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=5168>Question 5168</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I NEED HELP ASAP!\r<BR>\n" );
document.write( "\n" );
document.write( "A motorboat traveled for 2 hous with an 8 KM/H. The return trip against the same current took 3 hours. Find the speed of the motorboat in still water.\r<BR>\n" );
document.write( "\n" );
document.write( "THANKS IN ADVANCE </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #2662 by </B><A HREF=/tutors/aboutme.mpl?userid=xcentaur><B>xcentaur(357)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=xcentaur><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=2662\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let speed of the motorboat be x kmph<BR>\n" );
document.write( "let speed of current be y kmph<BR>\n" );
document.write( "<P><BR>\n" );
document.write( "speed with the current=(x+y)=8 km/h<BR>\n" );
document.write( "time taken=2 hours<BR>\n" );
document.write( "distance=s*t=8*2=16 km<BR>\n" );
document.write( "<P><BR>\n" );
document.write( "speed against current=(x-y)km/h<BR>\n" );
document.write( "distance=16 km<BR>\n" );
document.write( "time taken=3 hours<BR>\n" );
document.write( "hence,speed=d/t=16/3 hours<BR>\n" );
document.write( "<P><BR>\n" );
document.write( "x+y=8.......[1]<BR>\n" );
document.write( "x-y=16/3....[2]<BR>\n" );
document.write( "<br><BR>\n" );
document.write( "Adding eqns 1 and 2 we get,<BR>\n" );
document.write( "2x=8+16/3<BR>\n" );
document.write( "2x=(24+16)/3<BR>\n" );
document.write( "2x=40/3<BR>\n" );
document.write( "x=(40/3)/2<BR>\n" );
document.write( "x=20/3<BR>\n" );
document.write( "=6.67 km/h<BR>\n" );
document.write( "<P><BR>\n" );
document.write( "Hence speed in still water=6.67 km/h </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );