document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=758376>Question 758376</A>: <I><SPAN STYLE=\"word-break: break-all;\"> please help me solve this equation: Barb ran 200m with the wind in 20s and against the wind in 25s. Find Barb's running speed and the wind speed. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #461480 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=461480\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Barb ran 200m with the wind in 20s and against the wind in 25s. Find Barb's running speed and the wind speed.<BR>\n" );
document.write( "***<BR>\n" );
document.write( "let x= Barb's running speed<BR>\n" );
document.write( "let c=wind speed<BR>\n" );
document.write( "Barb's speed with the wind=x+c<BR>\n" );
document.write( "Barb's speed against the wind=x-c<BR>\n" );
document.write( "distance/speed=travel time<BR>\n" );
document.write( "..<BR>\n" );
document.write( "200/(x+c)=20<BR>\n" );
document.write( "200/(x-c)=25<BR>\n" );
document.write( "..<BR>\n" );
document.write( "200=20x+20c<BR>\n" );
document.write( "200=25x-25c<BR>\n" );
document.write( "..<BR>\n" );
document.write( "10=x+c<BR>\n" );
document.write( "8=x-c<BR>\n" );
document.write( "2x=18<BR>\n" );
document.write( "x=9<BR>\n" );
document.write( "c=x-8=1<BR>\n" );
document.write( "Barb's running speed=9 m/s<BR>\n" );
document.write( "wind speed=1 m/s </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );