document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1171821>Question 1171821</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A plane traveled 1600 miles to munich and back. The trip there was with the wind. It took 10 hours. The trip back was into the wind . The trip back took 16 hours. What is the speed of the plane still in air? what is the speed of the wind?  </SPAN>\n" );
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document.write( "... traveled 1600 miles to Munich and back. The trip there was with the wind. It took 10 hours. The trip back was into the wind . The trip back took 16 hours. What is the speed of the plane <i>in still</i> air? what is the speed of the wind?<BR>\n" );
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document.write( "Withe the wind, and against the wind, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%28r%2Bw=1600%2F10%2Cr-w=1600%2F16%29 ALIGN=MIDDLE  ALT=\"system%28r%2Bw=1600%2F10%2Cr-w=1600%2F16%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=system%28r%2Bw=160%2Cr-w=100%29 ALIGN=MIDDLE  ALT=\"system%28r%2Bw=160%2Cr-w=100%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "ADD corresponding members and simplify, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28r=130%29 ALIGN=MIDDLE  ALT=\"highlight%28r=130%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, and w easily findable, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28w=30%29 ALIGN=MIDDLE  ALT=\"highlight%28w=30%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >. </SPAN>\n" );
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