document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=481055>Question 481055</A>: <I><SPAN STYLE=\"word-break: break-all;\"> By increasing his average speed by 10 mi/hr, a motorist could save 36 minutes in traveling a distance of 120 miles. Find her actual average speed. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #329415 by </B><A HREF=/tutors/aboutme.mpl?userid=jorel1380><B>jorel1380(3719)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jorel1380><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=jorel1380><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=329415\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 120/p=120/(p+10)+36/60<BR>\n" );
document.write( "120/p=120/(p+10)+.6<BR>\n" );
document.write( "1200/p=1200/(p+10)+6<BR>\n" );
document.write( "1200(p+10)=1200p+6p2+60p<BR>\n" );
document.write( "1200p+12000=1200p+6p2+60p<BR>\n" );
document.write( "6p2+60p-12000=0<BR>\n" );
document.write( "p2+10p-2000=0<BR>\n" );
document.write( "(p+50)(p-40)=0<BR>\n" );
document.write( "p=40 or -50<BR>\n" );
document.write( "Throwing out the negative answer, we get the motorist's actual average speed to be 40 mph.. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );