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# A plane is traveling between City A and City B, which are

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A plane is traveling between City A and City B, which are [#permalink]  25 Apr 2008, 10:22
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A plane is traveling between City A and City B, which are 2000 miles apart. City A is due north of City B, and there is a strong, constant wind blowing due south. At constant speed, it takes a plane 5 hours to go from A to B with the wind at its tail, but 8 hours to go back when facing this headwind. What is the speed of the wind?
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Joined: 27 Mar 2008
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Re: PS: Plane [#permalink]  25 Apr 2008, 11:44
A -> B = 5hrs
B -> A = 8hrs

With no wind, time each way should be equal.

Speed of plane = 2000/6.5 = 307.6 mph

Speed (A->B) = 2000/5 = 400mph

Speed of wind = 92.4mph
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Re: PS: Plane [#permalink]  25 Apr 2008, 12:33
I am getting 75..if I consider
P+W = 2000/5

P-W = 2000/8
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Re: PS: Plane [#permalink]  28 Apr 2008, 10:32
guys, does anyone has the OA to this?
Re: PS: Plane   [#permalink] 28 Apr 2008, 10:32
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