document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=822367>Question 822367</A>: <I><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "A motorboat traveling with the current went 105 mi in 5 h. Traveling against the current, it took 7 h to travel the same distance. Find the rate of the boat in calm water and 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 #494805 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39616)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=494805\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> r is boat without current<BR>\n" );
document.write( "c is current\r<BR>\n" );
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document.write( "r+c is WITH the current and r-c is AGAINST the current.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28r%2Bc%29%2A5=105 ALIGN=MIDDLE  ALT=\"%28r%2Bc%29%2A5=105\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28r-c%29%2A7=105 ALIGN=MIDDLE  ALT=\"%28r-c%29%2A7=105\"   DISABLED_style= \"max-width:90%; height:auto;\" > is the symbolic translation from your description.  Two equations in two unknowns.  Enough? </SPAN>\n" );
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