document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=56780>Question 56780</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A plane flies 500 miles with the wind and 340 miles against the wind in the same length of time.  If the speed of the wind is 28mph, what is the speed of the plane in still air? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #38534 by </B><A HREF=/tutors/aboutme.mpl?userid=funmath><B>funmath(2933)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=funmath><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=38534\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A plane flies 500 miles with the wind and 340 miles against the wind in the same length of time.  If the speed of the wind is 28mph, what is the speed of the plane in still air?<BR>\n" );
document.write( "the distance formula is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d=rt ALIGN=MIDDLE  ALT=\"d=rt\"   DISABLED_style= \"max-width:90%; height:auto;\" > solve tihs for t and you have: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2Fr=t ALIGN=MIDDLE  ALT=\"d%2Fr=t\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Both our t's are the same so we're going to let t=t or d/r with the wind =d/r against the wind.<BR>\n" );
document.write( "Let the rate of the plane be:x<BR>\n" );
document.write( "Then the rate with the wind is: x+28<BR>\n" );
document.write( "And the rate against the wind is: x-28<BR>\n" );
document.write( "The distance with the wind is:500<BR>\n" );
document.write( "The distance against the wind is: 340<BR>\n" );
document.write( "The problem to solve is:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=500%2F%28x%2B28%29=340%2F%28x-28%29 ALIGN=MIDDLE  ALT=\"500%2F%28x%2B28%29=340%2F%28x-28%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=500%28x%2B28%29%28x-28%29%2F%28x%2B28%29=340%28x%2B28%29%28x-28%29%2F%28x-28%29 ALIGN=MIDDLE  ALT=\"500%28x%2B28%29%28x-28%29%2F%28x%2B28%29=340%28x%2B28%29%28x-28%29%2F%28x-28%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=500%2Across%28%28x%2B28%29%29%28x-28%29%2Fcross%28%28x%2B28%29%29=340%2A%28x%2B28%29%2Across%28%28x-28%29%29%2Fcross%28%28x-28%29%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=500%28x-28%29=340%28x%2B28%29 ALIGN=MIDDLE  ALT=\"500%28x-28%29=340%28x%2B28%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=500x-14000=340x%2B9520 ALIGN=MIDDLE  ALT=\"500x-14000=340x%2B9520\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-340x%2B500x-14000=-340x%2B340x%2B9520 ALIGN=MIDDLE  ALT=\"-340x%2B500x-14000=-340x%2B340x%2B9520\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=160x-14000=9520 ALIGN=MIDDLE  ALT=\"160x-14000=9520\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=160x-14000%2B14000=14000%2B9520 ALIGN=MIDDLE  ALT=\"160x-14000%2B14000=14000%2B9520\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=160x=23520 ALIGN=MIDDLE  ALT=\"160x=23520\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=160x%2F160=23520%2F160 ALIGN=MIDDLE  ALT=\"160x%2F160=23520%2F160\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=147 ALIGN=MIDDLE  ALT=\"x=147\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The rate of the plane in still air is: 147 mph<BR>\n" );
document.write( "Happy Calculating!!! </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );