document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=28909>Question 28909</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Jim can run 5 miles per hour on level ground on a still day.  One windy day, he runs 10 miles per hour with the wind, and in the same amount of time runs 7 miles against the wind. What is the rate of the wind.\r<BR>\n" );
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document.write( "Can you please help me set this up, I can't figure out how to write the equations. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #15798 by </B><A HREF=/tutors/aboutme.mpl?userid=Paul><B>Paul(988)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Paul><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=15798\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> His speed of the stillground = 5mph <BR>\n" );
document.write( "Let the speed of the wind be x<BR>\n" );
document.write( "Equation:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=10%2F%285%2Bx%29=7%2F%285-x%29 ALIGN=MIDDLE  ALT=\"10%2F%285%2Bx%29=7%2F%285-x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Cross multiply:<BR>\n" );
document.write( "7(5+x)=10(5-x)<BR>\n" );
document.write( "35+7x=50-10x<BR>\n" );
document.write( "17x=15<BR>\n" );
document.write( "x=0.88 (rounded)\r<BR>\n" );
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document.write( "Hence, the speed of the wind is 0.88mph.<BR>\n" );
document.write( "Paul. </SPAN>\n" );
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