document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=569986>Question 569986</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello  - thank you for helping with the following quesiton:\r<BR>\n" );
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document.write( "With a tail wind, a plane flew 240 km in 45 minutes. With no change in the wind, the return trip took 48 minutes. Find the wind speed and the air 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 #367494 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=367494\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+ ALIGN=MIDDLE  ALT=\"+s+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = speed of plane in still air<BR>\n" );
document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+w+ ALIGN=MIDDLE  ALT=\"+w+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = wind speed<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+%2B+w+ ALIGN=MIDDLE  ALT=\"+s+%2B+w+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = speed of plane with tail wind<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+-+w+ ALIGN=MIDDLE  ALT=\"+s+-+w+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = speed of plane against the wind<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+45+ ALIGN=MIDDLE  ALT=\"+45+\"   DISABLED_style= \"max-width:90%; height:auto;\" > min = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+3%2F4+ ALIGN=MIDDLE  ALT=\"+3%2F4+\"   DISABLED_style= \"max-width:90%; height:auto;\" > hr<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+48+ ALIGN=MIDDLE  ALT=\"+48+\"   DISABLED_style= \"max-width:90%; height:auto;\" > min = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+4%2F5+ ALIGN=MIDDLE  ALT=\"+4%2F5+\"   DISABLED_style= \"max-width:90%; height:auto;\" > hr<BR>\n" );
document.write( "---------<BR>\n" );
document.write( "given:<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+%2B+w+=+240%2F%28+3%2F4%29+ ALIGN=MIDDLE  ALT=\"+s+%2B+w+=+240%2F%28+3%2F4%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+-+w+=+240%2F%28+4%2F5+%29+ ALIGN=MIDDLE  ALT=\"+s+-+w+=+240%2F%28+4%2F5+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "------------------<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+%2B+w+=+%284%2F3%29%2A240+ ALIGN=MIDDLE  ALT=\"+s+%2B+w+=+%284%2F3%29%2A240+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+-+w+=+%285%2F4%29%2A240+ ALIGN=MIDDLE  ALT=\"+s+-+w+=+%285%2F4%29%2A240+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Add the equations<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+2s+=+240%2A%28+4%2F3+%2B+5%2F4+%29+ ALIGN=MIDDLE  ALT=\"+2s+=+240%2A%28+4%2F3+%2B+5%2F4+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+=+120%2A%28+4%2F3+%2B+5%2F4+%29+ ALIGN=MIDDLE  ALT=\"+s+=+120%2A%28+4%2F3+%2B+5%2F4+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+=+120%2A%28+16%2F12+%2B+15%2F12+%29+ ALIGN=MIDDLE  ALT=\"+s+=+120%2A%28+16%2F12+%2B+15%2F12+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+=+10%2A%28+16+%2B+15+%29+ ALIGN=MIDDLE  ALT=\"+s+=+10%2A%28+16+%2B+15+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+=+310+ ALIGN=MIDDLE  ALT=\"+s+=+310+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+%2B+w+=+%284%2F3%29%2A240+ ALIGN=MIDDLE  ALT=\"+s+%2B+w+=+%284%2F3%29%2A240+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+310+%2B+w+=+%284%2F3%29%2A240+ ALIGN=MIDDLE  ALT=\"+310+%2B+w+=+%284%2F3%29%2A240+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+w+=+320+-+310+ ALIGN=MIDDLE  ALT=\"+w+=+320+-+310+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+w+=+10+ ALIGN=MIDDLE  ALT=\"+w+=+10+\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "Air speed is 310 km/hr<BR>\n" );
document.write( "wind speed is 10 km/hr<BR>\n" );
document.write( "check:<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+%2B+w+=+240%2F%28+3%2F4%29+ ALIGN=MIDDLE  ALT=\"+s+%2B+w+=+240%2F%28+3%2F4%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+310+%2B+10+=+240%2F%28+3%2F4%29+ ALIGN=MIDDLE  ALT=\"+310+%2B+10+=+240%2F%28+3%2F4%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+320+=+%284%2F3%29%2A240+ ALIGN=MIDDLE  ALT=\"+320+=+%284%2F3%29%2A240+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+960+=+4%2A240+ ALIGN=MIDDLE  ALT=\"+960+=+4%2A240+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+960+=+960+ ALIGN=MIDDLE  ALT=\"+960+=+960+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+-+w+=+240%2F%28+4%2F5+%29+ ALIGN=MIDDLE  ALT=\"+s+-+w+=+240%2F%28+4%2F5+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+310+-+10+=+240%2F%28+4%2F5+%29+ ALIGN=MIDDLE  ALT=\"+310+-+10+=+240%2F%28+4%2F5+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+300+=+%285%2F4%29%2A240+ ALIGN=MIDDLE  ALT=\"+300+=+%285%2F4%29%2A240+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1200+=+1200+ ALIGN=MIDDLE  ALT=\"+1200+=+1200+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );