document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=580738>Question 580738</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A motorboat takes 5 hours to travel 450 mi going upstream. The return trip takes 3 hours going downstream. What is the rate of the boat in still water and what is the rate 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 #371362 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=371362\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A motorboat takes 5 hours to travel 450 mi going upstream. The return trip takes 3 hours going downstream. What is the rate of the boat in still water and what is the rate of the current?<BR>\n" );
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document.write( "450/5 = 90 mi/hr<BR>\n" );
document.write( "450/3 = 150 mi/hr<BR>\n" );
document.write( "The boat's speed is the average = (90 + 150)/2 = 120 mi/hr<BR>\n" );
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document.write( "The current is the difference = 150-120 = 30 mi/hr<BR>\n" );
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