document.write( "Question 827419: Flying to Kampala with a tailwind a plane averaged 158km/h. On the return trip the plane only averaged 112km/h while flying back into the same wind. Find the speed of the wind and the plane in still air. \r
\n" ); document.write( "\n" ); document.write( "I have no idea what I'm doing . Thank you so so so much for helping. \n" ); document.write( "
Algebra.Com's Answer #498726 by ankor@dixie-net.com(22740)\"\" \"About 
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Flying to Kampala with a tailwind a plane averaged 158km/h.
\n" ); document.write( " On the return trip the plane only averaged 112km/h while flying back into the same wind.
\n" ); document.write( "Find the speed of the wind and the plane in still air.
\n" ); document.write( ":
\n" ); document.write( "Let s = plane speed in still air
\n" ); document.write( "let w = the wind speed
\n" ); document.write( "then write an equation for each way, use elimination here
\n" ); document.write( "s + w = 158
\n" ); document.write( "s - w = 112
\n" ); document.write( "------------ adding eliminates w find s
\n" ); document.write( "2s = 270
\n" ); document.write( "s = 270/2
\n" ); document.write( "s = 135 km/hr speed in still air
\n" ); document.write( "Find w
\n" ); document.write( "135 + w = 158
\n" ); document.write( "w = 158 - 135
\n" ); document.write( "w = 23 km/hr the wind speed
\n" ); document.write( ":
\n" ); document.write( "Not that hard, right? \n" ); document.write( "
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