document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=428014>Question 428014</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A plane flies 435 miles with the wind and 345 miles against the wind in the same length of time. If the speed of the wind is 15mph, find 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 #853194 by </B><A HREF=/tutors/aboutme.mpl?userid=timofer><B>timofer(136)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=timofer><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=853194\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> rate x time = distance\r<BR>\n" );
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document.write( "time = distance/rate\r<BR>\n" );
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document.write( "Take speed without wind as s.<BR>\n" );
document.write( "Those with wind and against wind times given as equal.\r<BR>\n" );
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document.write( "With the wind <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=435%2F%28s%2B15%29 ALIGN=MIDDLE  ALT=\"435%2F%28s%2B15%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Against the wind <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=345%2F%28s-15%29 ALIGN=MIDDLE  ALT=\"345%2F%28s-15%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Times were equal.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=435%2F%28s%2B15%29=345%2F%28s-15%29 ALIGN=MIDDLE  ALT=\"435%2F%28s%2B15%29=345%2F%28s-15%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Solve this for s.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=435%28s-15%29=345%28s%2B15%29 ALIGN=MIDDLE  ALT=\"435%28s-15%29=345%28s%2B15%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=87%28s-15%29=69%28s%2B15%29 ALIGN=MIDDLE  ALT=\"87%28s-15%29=69%28s%2B15%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=87s-1305=69s%2B1035 ALIGN=MIDDLE  ALT=\"87s-1305=69s%2B1035\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%2887-69%29s=1305%2B1035 ALIGN=MIDDLE  ALT=\"%2887-69%29s=1305%2B1035\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=18s=2340 ALIGN=MIDDLE  ALT=\"18s=2340\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=s=2340%2F18=1170%2F9=130 ALIGN=MIDDLE  ALT=\"s=2340%2F18=1170%2F9=130\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "130 miles per hour without the wind </SPAN>\n" );
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