document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=119999>Question 119999</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0534253377/algebrahomeworkh>Beginning and Intermediate Algebra</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> A river boat tour begins by going 60 miles upstream against a 5 mph current. Then the boat turns around and returns with the current. What still-water speed should the captain use to complete the tour in 5 hours? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #87950 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=87950\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A river boat tour begins by going 60 miles upstream against a 5 mph current. Then the boat turns around and returns with the current. What still-water speed should the captain use to complete the tour in 5 hours?<BR>\n" );
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document.write( "Dear Student, I think I interpreted this problem wrong. It seems they want to<BR>\n" );
document.write( "know the speed required to return to the beginning (60 mi) in 5 hrs<BR>\n" );
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document.write( "Let s = still water speed<BR>\n" );
document.write( "then<BR>\n" );
document.write( "(s+5) = speed downstream<BR>\n" );
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document.write( "Write a time equation: Time = Distance/speed<BR>\n" );
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document.write( "Time down stream = 5 h<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=60%2F%28%28s%2B5%29%29 ALIGN=MIDDLE  ALT=\"60%2F%28%28s%2B5%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 5<BR>\n" );
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document.write( "Multiply equation by (s+5) to get rid of the denominators, results:<BR>\n" );
document.write( "60 = 5(s+5)<BR>\n" );
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document.write( "60 = 5s + 25<BR>\n" );
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document.write( "5s = 60 - 25<BR>\n" );
document.write( "5s = 35<BR>\n" );
document.write( "s = 35/5<BR>\n" );
document.write( "s = 7 mph still water speed to return in 5 hours<BR>\n" );
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document.write( "Check by finding the distance going (7+5) mph for 5 hrs<BR>\n" );
document.write( "12*5 = 80; confirms our solution<BR>\n" );
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document.write( "I truly regret giving you wrong information.  Ankor </SPAN>\n" );
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