Posted by Anonymous on Thursday, February 28, 2013 at 9:11pm.
Flying to Kampala with a tailwind a plane average 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 speed of the plane in still air.

Math please help  Anonymous, Thursday, February 28, 2013 at 9:44pm
Please can someone else help me?

Math Ms. Sue please help  Reiny, Thursday, February 28, 2013 at 10:32pm
speed of plane in still air  x mph
speed of wind  y mph
so going with the wind, speed = x+y
against the wind, speed = xy
x+y = 158
xy = 112
add them
2x = 270
x = 135
then 135 + y = 158
y = 23
speed of wind is 23 mph, speed of plane in still air = 135 mph
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