document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=988059>Question 988059</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If a plane travels 450 mph from LAX to JFK airports one way and travels 500 mph back how many miles did the plane travel if it took 13.3 hours for the round trip? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #608742 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=608742\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If a plane travels 450 mph from LAX to JFK airports one way and travels 500 mph back<BR>\n" );
document.write( " how many miles did the plane travel if it took 13.3 hours for the round trip? <BR>\n" );
document.write( ":<BR>\n" );
document.write( "let d = the one-way dist from LAX to JFK<BR>\n" );
document.write( "Write a time equation; time = dist/speed<BR>\n" );
document.write( " to time + return time = 13.3 hrs<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2F450 ALIGN=MIDDLE  ALT=\"d%2F450\"   DISABLED_style= \"max-width:90%; height:auto;\" > + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2F500 ALIGN=MIDDLE  ALT=\"d%2F500\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 13.3<BR>\n" );
document.write( "multiply equation by the least common multiple of 450 and 500, <BR>\n" );
document.write( "4500*<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2F450 ALIGN=MIDDLE  ALT=\"d%2F450\"   DISABLED_style= \"max-width:90%; height:auto;\" > + 4500*<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2F500 ALIGN=MIDDLE  ALT=\"d%2F500\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 4500(13.3)<BR>\n" );
document.write( "Cancel the denominators and you have<BR>\n" );
document.write( "10d + 9d = 59850<BR>\n" );
document.write( "19d = 59850<BR>\n" );
document.write( "d = 59850/19<BR>\n" );
document.write( "d = 3150 mi is the one way distance<BR>\n" );
document.write( "therefore<BR>\n" );
document.write( "2 * 3150 = 6300 mi traveled in the round trip<BR>\n" );
document.write( ":<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Confirm this by finding the actual time each way<BR>\n" );
document.write( "3150/450 = 7.0 hrs<BR>\n" );
document.write( "3150/500 = 6.3 hrs<BR>\n" );
document.write( "----------------------<BR>\n" );
document.write( "total time: 13.3 hrs </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );