document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=820200>Question 820200</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A cargo plane flew to the maintenance<BR>\n" );
document.write( "facility and back. It took one hour less time<BR>\n" );
document.write( "to get there than it did to get back. The<BR>\n" );
document.write( "average speed on the trip there was 220<BR>\n" );
document.write( "mph. The average speed on the way back<BR>\n" );
document.write( "was 200 mph. How many hours did the trip<BR>\n" );
document.write( "there take? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #493427 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=493427\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A cargo plane flew to the maintenance facility and back.<BR>\n" );
document.write( "It took one hour less time to get there than it did to get back.<BR>\n" );
document.write( " The average speed on the trip there was 220 mph.<BR>\n" );
document.write( " The average speed on the way back was 200 mph.<BR>\n" );
document.write( " How many hours did the trip there take?<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Let t = time to get there<BR>\n" );
document.write( "then<BR>\n" );
document.write( "(t+1) = time to get back<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Write a distance equation: dist = speed * time<BR>\n" );
document.write( "dist there = dist back<BR>\n" );
document.write( "220t = 200(t+1)<BR>\n" );
document.write( "220t = 200t + 200<BR>\n" );
document.write( "220t - 200t = 200<BR>\n" );
document.write( "20t = 200<BR>\n" );
document.write( "t = 200/20<BR>\n" );
document.write( "t = 10 hrs to get there<BR>\n" );
document.write( ":<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Check this by finding the distance each way, they should be equal if we did it right<BR>\n" );
document.write( "220 * 10 = 2200 miles<BR>\n" );
document.write( "200 * 11 = 2200 miles </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );