document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=671413>Question 671413</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If the average speed of a light plane had been 40km/h, the plane would have taken one hour longer to fly 1200 km. What was the speed of the plane? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #417402 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=417402\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If the average speed of a light plane had been 40km/h, the plane would have taken one hour longer to fly 1200 km. What was the speed of the plane?<BR>\n" );
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document.write( "\"If\" DATA:<BR>\n" );
document.write( "rate = 40 km/h ; distance = 1200 km ; time = 1200/40 = 30 hrs.<BR>\n" );
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document.write( "Actual flight DATA:<BR>\n" );
document.write( "rate =  x km/h ; distance = 1200 km ; time = 1200/x hrs<BR>\n" );
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document.write( "\"If\" time - Actual time = 1 hr<BR>\n" );
document.write( "30 - 1200/x = 1<BR>\n" );
document.write( "1200/x = 29<BR>\n" );
document.write( "x = 1200/29<BR>\n" );
document.write( "x = 41.38 km/hr (Actual speed of the plane)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "================= </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );