document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=461575>Question 461575</A>: <I><SPAN STYLE=\"word-break: break-all;\"> you are meeting a friend to ride a bike around a track. Your friend has already completed 2 laps (1/4 mile each lap) at 20 mi/hr and wants to do 20 laps total. If you want to do 20 laps also and finish at the exact same time, how fast do you have to ride? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #316522 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=316522\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> you are meeting a friend to ride a bike around a track. Your friend has already completed 2 laps (1/4 mile each lap) at 20 mi/hr and wants to do 20 laps total. If you want to do 20 laps also and finish at the exact same time, how fast do you have to ride.<BR>\n" );
document.write( "..<BR>\n" );
document.write( "let x=speed (mph) you have to ride to finish at the exact same time as your friend<BR>\n" );
document.write( "Your speed=distance/travel time<BR>\n" );
document.write( "distance=1/4*20=20/4=5 mi<BR>\n" );
document.write( "Travel time=time it takes friend to complete 18 laps at 20 mph<BR>\n" );
document.write( "Friend's distance=18/4=4.5 mi<BR>\n" );
document.write( "Friend's travel time=distance/speed=4.5/20=.225 hrs<BR>\n" );
document.write( "your speed=5/.225=22.22 mph<BR>\n" );
document.write( "ans:<BR>\n" );
document.write( "Speed you have to ride to finish at the exact same time as your friend=22.22 mph </SPAN>\n" );
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