document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=24531>Question 24531</A>: <I><SPAN STYLE=\"word-break: break-all;\"> HERE IS THE PROBLEM:<BR>\n" );
document.write( "It takes Lynnette 2 hours to row her boat 9 miles traveling with the current, and 6 hours to return that same distance against the curent. Find her speed and the speed of the current.<BR>\n" );
document.write( "I HAVE NEVER HAD TO FIND THE SPEED OF BOAT AND SPEED OF CURRENT TOGETHER IN THE SAME PROBLEM. I DON'T KNOW WHERE TO START. THIS IS DUE BY 01/17/06. THANKS FOR YOUR HELP! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #13058 by </B><A HREF=/tutors/aboutme.mpl?userid=longjonsilver><B>longjonsilver(2297)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=longjonsilver><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=longjonsilver><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=13058\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the beauty of maths or the power of maths is that you learn the basic approach, the basic methods and then you can learn to apply those to harder situations.\r<BR>\n" );
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document.write( "Let speed of boat = x mph<BR>\n" );
document.write( "Let speed of current = y mph\r<BR>\n" );
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document.write( "So, with the current:<BR>\n" );
document.write( "her speed will be x+y. Takes 2 hours to go 9 miles.\r<BR>\n" );
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document.write( "Speed = distance/time so<BR>\n" );
document.write( "x+y = 9/2<BR>\n" );
document.write( "--> x+y = 4.5\r<BR>\n" );
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document.write( "and against the current:<BR>\n" );
document.write( "her speed will be x-y. Takes her 6 hours to go the same 9 miles.\r<BR>\n" );
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document.write( "Speed = distance/time so<BR>\n" );
document.write( "x-y = 9/6<BR>\n" );
document.write( "--> x-y = 1.5\r<BR>\n" );
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document.write( "So, we have 2 unknowns and 2 equations. This is solveable.\r<BR>\n" );
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document.write( "x+y = 4.5<BR>\n" );
document.write( "x-y = 1.5\r<BR>\n" );
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document.write( "Add them together... 2x = 6 --> x = 3mph\r<BR>\n" );
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document.write( "So, x+y = 4.5<BR>\n" );
document.write( "then 3+y = 4.5<BR>\n" );
document.write( "--> y = 1.5 mph\r<BR>\n" );
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document.write( "So, her speed is 3mph and river is 1.5 mph\r<BR>\n" );
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document.write( "Check in second equation, to makes sure:<BR>\n" );
document.write( "x-y = 1.5<BR>\n" );
document.write( "3-1.5 is indeed equal to 1.5, so correct\r<BR>\n" );
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document.write( "jon.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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