document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=604276>Question 604276</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A driver drives 20 miles at 20mi/hour. How fast must the driver go for the next 20 miles to bring the average speed for the whole trip up to 30mi/hour? What is the average speed he cannot go to recover time?<BR>\n" );
document.write( "I know that he has to go an average of 40mi/hour to get there using the equation Average speed =total distance/ total time </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #381071 by </B><A HREF=/tutors/aboutme.mpl?userid=flame8855><B>flame8855(424)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=flame8855><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=flame8855><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=381071\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> average speed = 30 mi/hour<BR>\n" );
document.write( "average speed= total distance /total time<BR>\n" );
document.write( "30= 40mi/(x+1)<BR>\n" );
document.write( "x= 1/3 hour<BR>\n" );
document.write( "speed = distance /time<BR>\n" );
document.write( "speed = 20/1/3 = 60 miles /hour<BR>\n" );
document.write( "a speed less than 60 he will not recover\r<BR>\n" );
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