document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=78860>Question 78860</A>: <I><SPAN STYLE=\"word-break: break-all;\"> d..ch5\r<BR>\n" );
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document.write( "A plane took 1 hour longer to travel 560miles on the first portion of a flight than it took to fly 480miles on the second portion. If the speed was the same for each portion , what was the flying time for the second part of the trip?\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #56707 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=56707\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A plane took 1 hour longer to travel 560 miles on the first portion of a flight than it took to fly 480 miles on the second portion. If the speed was the same for each portion , what was the flying time for the second part of the trip?<BR>\n" );
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document.write( "Let t = time of the 2nd portion (480 mi)<BR>\n" );
document.write( "Then (t+1) = time of the 560 mi portion:<BR>\n" );
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document.write( "The speed is the same on both portions, write an equation from this fact:<BR>\n" );
document.write( "s = distance/time<BR>\n" );
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document.write( "560 mi speed = 480 mi speed<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=560%2F%28%28t%2B1%29%29 ALIGN=MIDDLE  ALT=\"560%2F%28%28t%2B1%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=480%2Ft ALIGN=MIDDLE  ALT=\"480%2Ft\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Cross multiply and you have:<BR>\n" );
document.write( "560t = 480(t+1)<BR>\n" );
document.write( "560t = 480t + 480<BR>\n" );
document.write( "560t - 480t = 480<BR>\n" );
document.write( "80t = 480<BR>\n" );
document.write( "t = 480/80<BR>\n" );
document.write( "t = 6 hrs<BR>\n" );
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document.write( "Check solution by finding the speed, which should be the same:<BR>\n" );
document.write( "560/7 = 80<BR>\n" );
document.write( "480/6 = 80<BR>\n" );
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