document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=322863>Question 322863</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The speed of a sparrow is x mph in still air. When the wind is blowing at 1 mph, the sparrow takes 5 hours to fly 12 miles to its nest and 12 hours to return again. He flies out directly into the wind and returns with the wind behind him. FInd his speed 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 #231159 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=231159\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The speed of a sparrow is x mph in still air. <BR>\n" );
document.write( "When the wind is blowing at 1 mph,<BR>\n" );
document.write( "speed will be x-1 mph against the wind<BR>\n" );
document.write( "time taken 12 hours<BR>\n" );
document.write( "..<BR>\n" );
document.write( "Distance traveled both ways is the same<BR>\n" );
document.write( "Distance = rate*time<BR>\n" );
document.write( "12*(x-1) = 12<BR>\n" );
document.write( "with wind<BR>\n" );
document.write( "5*(x+1)=12<BR>\n" );
document.write( "..<BR>\n" );
document.write( "12(x-1)=5*(x+1)<BR>\n" );
document.write( "12x-12=5x+5<BR>\n" );
document.write( "12x-5x=12+5<BR>\n" );
document.write( "7x=17<BR>\n" );
document.write( "x= 17/7 mph in still air\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "the sparrow takes 5 hours to fly 12 miles to its nest and 12 hours to return again. He flies out directly into the wind and returns with the wind behind him. FInd his speed in still air. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );