document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=603093>Question 603093</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi Dear Tutor I need your help to explain to me how we put this word problem into a equation. I tried here but i dont think i m getting the right answer, plus my book does not have a similiar example. You dont have to give me the answer but if you could show me how to make the equation with this information. \r<BR>\n" );
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document.write( "Thank You very much,\r<BR>\n" );
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document.write( "Monick\r<BR>\n" );
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document.write( "1)A plane traveled 630 miles to Tokyo and back. The trip there was with the wind.It took 7 hours. The trip back was into the wind. The trip back took 21 hours. What is the speed of a plane in still air? what is the speed of the wind? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #380566 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=380566\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1)A plane traveled 630 miles to Tokyo and back. The trip there was with the wind.It took 7 hours. The trip back was into the wind. The trip back took 21 hours. What is the speed of a plane in still air? what is the speed of the wind?<BR>\n" );
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document.write( "Find the 2 groundspeeds.<BR>\n" );
document.write( "with the wind, 630/7 = 90 mi/hr (some plane)<BR>\n" );
document.write( "against the wind, 630/21 = 30 mi/hr<BR>\n" );
document.write( "The plane's airspeed is the average: (90 + 30)/2 = 60 mi/hr<BR>\n" );
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document.write( "The windspeed is the difference: 90 - 60 = 30 mi/hr<BR>\n" );
document.write( "Shoulda taken a bus.<BR>\n" );
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