document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=632285>Question 632285</A>: <I><SPAN STYLE=\"word-break: break-all;\">  Karen traveled 640 miles by boat and returned by plane. She spent 42 hours traveling on the trip. If the rate of the plane is 20 times faster than the rate of the boat, find each rate. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #398201 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16949)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=398201\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let boat speed = x mph<BR>\n" );
document.write( "plane speed = 20 x\r<BR>\n" );
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document.write( "Time forward + time return = 42 hours\r<BR>\n" );
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document.write( "distance one way = 640 miles\r<BR>\n" );
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document.write( "time = d/r\r<BR>\n" );
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document.write( "640/x + 640/20x= 42\r<BR>\n" );
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document.write( "LCD = 20x<BR>\n" );
document.write( "(640*20 +640)/20x= 42<BR>\n" );
document.write( "12800 +640= 42*20x\r<BR>\n" );
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document.write( "13440= 840x\r<BR>\n" );
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document.write( "x= 13440/840\r<BR>\n" );
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document.write( "x= 16 mph  the speed of boat\r<BR>\n" );
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document.write( "speed of plane = 16*20 = 320 mph\r<BR>\n" );
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document.write( "m.ananth@hotmail.ca </SPAN>\n" );
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