document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=335644>Question 335644</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hanson drove 200 kilometers at x km/hr and then decreased his speed 20 km/hr and drove 240 extra kilometers.  Make a table like the one in problem 87.  Write a rational expression for his total traveling time.  Evaluate that expression for x = 100 km/hr. </SPAN>\n" );
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document.write( "let total travelling time = t hrs , then<BR>\n" );
document.write( "t = 200/x + 240/(x-20)\r<BR>\n" );
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document.write( "qb<BR>\n" );
document.write( "when x = 100 m/hr,<BR>\n" );
document.write( "t = 200/100 + 240/80<BR>\n" );
document.write( "= 2 + 3<BR>\n" );
document.write( "= 5 hr\r<BR>\n" );
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document.write( "I hope this helps. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );