anonymous
  • anonymous
Two airfields A and B are 400 miles apart, and B is due east of A.A plane flew from A to B in two hours and then returned to A in 2 1/2 hours.If the wind blew with a constant velocity from the west during the entire trip,find the speed of the plane in still air and the speed of the wind?
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
please help with solutions.
anonymous
  • anonymous
say speed of plane=v speed of wind=v' 400/(v+v') = 5/2 hours 400/(v-v') = 2 hours solve these for v and v'

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