document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=737030>Question 737030</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a passenger plane made a trip between two cities in 3 hours. a cargo plane made the same trip in 4 hours. if the passenger plane flew at 75 miles per hour faster, how fast did the cargo plane fly?<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 #450211 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=450211\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a passenger plane made a trip between two cities in 3 hours.<BR>\n" );
document.write( " a cargo plane made the same trip in 4 hours. if the passenger plane flew at 75 miles per hour faster, how fast did the cargo plane fly?<BR>\n" );
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document.write( "Let s = speed of the cargo plane<BR>\n" );
document.write( "then<BR>\n" );
document.write( "(s+75) = speed of the pass plane<BR>\n" );
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document.write( "let d = distance between the two cities<BR>\n" );
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document.write( "Write an time equation for each plane's trip<BR>\n" );
document.write( "d/s = 4<BR>\n" );
document.write( "therefore:<BR>\n" );
document.write( "d = 4s<BR>\n" );
document.write( "and<BR>\n" );
document.write( "d/(s+75) = 3<BR>\n" );
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document.write( "replace d with 4s<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%284s%29%2F%28%28s%2B75%29%29 ALIGN=MIDDLE  ALT=\"%284s%29%2F%28%28s%2B75%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 3<BR>\n" );
document.write( "4s = 3(s+75)<BR>\n" );
document.write( "4s = 3s + 225<BR>\n" );
document.write( "4s - 3s = 225<BR>\n" );
document.write( "s = 225 mph is the speed of the cargo plane<BR>\n" );
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document.write( "You can confirm this, find d and check the times with 225 and 300 mph </SPAN>\n" );
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