document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=893009>Question 893009</A>: <I><SPAN STYLE=\"word-break: break-all;\"> the speed of a motor launch with respect to still water is 7m/s and the speed of stream is 3m/s . when the launch began travelling upstream , afloat was dropped from it . the launch travelled 4.2 km upstream , turned about andd caught up with the float . how long is it before the launch reaches the float?? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #541036 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=541036\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the speed of a motor launch with respect to still water is 7m/s and the speed of stream is 3m/s . when the launch began travelling upstream , afloat was dropped from it . the launch travelled 4.2 km upstream , turned about andd caught up with the float . how long is it before the launch reaches the float??<BR>\n" );
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document.write( "4.2 km = 4200 meters<BR>\n" );
document.write( "Speed upstream = 7-3 = 4 m/sec<BR>\n" );
document.write( "The boat travels away from the float for 4200/4 = 1050 seconds = 17.5 minutes<BR>\n" );
document.write( "It takes the same time to get back to it.<BR>\n" );
document.write( "The speed of the stream is not relevant.<BR>\n" );
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