document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=648797>Question 648797</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me solve this question<BR>\n" );
document.write( "its a wind current problem\r<BR>\n" );
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document.write( "it took the pilot an hour and a half to make a flight of 240 miles when flying against the headwind. The return trip took an hour and 12 minutes (the wind had not shifted nor changed its speed ) What was the speed of that wind?\r<BR>\n" );
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document.write( "please send me too an explanation please.<BR>\n" );
document.write( "and thank you....<BR>\n" );
document.write( "and fast if that's ok with you. thanks again ma'am/sir...<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 #406807 by </B><A HREF=/tutors/aboutme.mpl?userid=MathTherapy><B>MathTherapy(10552)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathTherapy><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=MathTherapy><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=406807\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Please help me solve this question<BR>\n" );
document.write( "its a wind current problem\r<BR>\n" );
document.write( "\n" );
document.write( "it took the pilot an hour and a half to make a flight of 240 miles when flying against the headwind. The return trip took an hour and 12 minutes (the wind had not shifted nor changed its speed ) What was the speed of that wind?\r<BR>\n" );
document.write( "\n" );
document.write( "please send me too an explanation please.<BR>\n" );
document.write( "and thank you....<BR>\n" );
document.write( "and fast if that's ok with you. thanks again ma'am/sir...\r<BR>\n" );
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document.write( "Let the speed in still air be S, and wind speed, W\r<BR>\n" );
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document.write( "Average speed during flight, against the wind = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=240%2F1%261%2F2 ALIGN=MIDDLE  ALT=\"240%2F1%261%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" >, or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=240%2F%283%2F2%29 ALIGN=MIDDLE  ALT=\"240%2F%283%2F2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=240%282%2F3%29 ALIGN=MIDDLE  ALT=\"240%282%2F3%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, or 160 mph. Therefore, S - W = 160 ----- eq (i)\r<BR>\n" );
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document.write( "Average speed during flight, with the wind = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=240%2F1%2612%2F60 ALIGN=MIDDLE  ALT=\"240%2F1%2612%2F60\"   DISABLED_style= \"max-width:90%; height:auto;\" >, or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=240%2F%286%2F5%29 ALIGN=MIDDLE  ALT=\"240%2F%286%2F5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=240%285%2F6%29 ALIGN=MIDDLE  ALT=\"240%285%2F6%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, or 200 mph. Therefore, S + W = 200 ----- eq (ii)\r<BR>\n" );
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document.write( "S - W = 160 ------ eq (i)<BR>\n" );
document.write( "S + W = 200 ------ eq (ii)<BR>\n" );
document.write( "- S + W = - 160 ------ Multiplying eq (i) by - 1 ----- eq (iii)<BR>\n" );
document.write( "2W = 40 ------ Adding eqs (iii) & (ii)\r<BR>\n" );
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document.write( "W, or speed of wind = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=40%2F2 ALIGN=MIDDLE  ALT=\"40%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" >, or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%2820%29 ALIGN=MIDDLE  ALT=\"highlight_green%2820%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > mph\r<BR>\n" );
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document.write( "Send comments and “thank-yous” to “D” at MathMadEzy@aol.com  </SPAN>\n" );
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