document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=928890>Question 928890</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a boat goes 560 miles downstream in the same time it can go 490 miles upstream. The speed of the current is 7 miles per hour. Find the speed of the boat in still water. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #563942 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><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=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=563942\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> times the same<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=560%2F%28s%2B7%29+=+490%2F%28s-7%29 ALIGN=MIDDLE  ALT=\"560%2F%28s%2B7%29+=+490%2F%28s-7%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > | Cross Multiplying to solve<BR>\n" );
document.write( "560(s-7) = 490(s+7)<BR>\n" );
document.write( "70s = 3430 + 3920<BR>\n" );
document.write( "s = 105mph, speed of the boat in still water (really...)<BR>\n" );
document.write( "And checking<BR>\n" );
document.write( "560/112 = 490/98 = 5hr </SPAN>\n" );
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