document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=177599>Question 177599</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello...can someone help me with this?\r<BR>\n" );
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document.write( "Use an indirect proof to show that John exceeded the 55 mph speed limit if he left his house at 8:15 a.m. and arrived at his office 60 miles away at 9 a.m.\r<BR>\n" );
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document.write( "Write the proof using the paragraph method. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #132634 by </B><A HREF=/tutors/aboutme.mpl?userid=Mathtut><B>Mathtut(3670)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Mathtut><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=132634\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> An indirect proof . . . <BR>\n" );
document.write( "We assume the opposite and prove a contradiction.\r<BR>\n" );
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document.write( "Assume that John did NOT exceed the speed limit.\r<BR>\n" );
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document.write( "He drove 60 miles at 55 mph.<BR>\n" );
document.write( "   This would take him:  60/55  =  1 hour 4½ minutes.\r<BR>\n" );
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document.write( "But he drove from 8:15 to 9:00 ... only 45 minutes.\r<BR>\n" );
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document.write( "Therefore, he must have driven faster than 55 mph </SPAN>\n" );
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