document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=181012>Question 181012</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Juan rides his bike from Lawrence to Salisbury beach (30 miles in 3 hours).  He divides distance (miles) by time (hours) and sees that his overall average speed is 10mph.  He buys 3 Power bars and eats them.  How fast (mph) must he return so that his overall average speed for the round trip (60 miles) is 15mph? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #135686 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=135686\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let x be the speed he must go on the return trip.<BR>\n" );
document.write( "(10+x)/2=15<BR>\n" );
document.write( "10+x=30<BR>\n" );
document.write( "x=20 mph<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Ed </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );