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27-10-2022
Mathematics

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a man flies a small airplane from fargo to bismarck, north dakota --- a distance of 180 miles. because he is flying into a head wind, the trip takes him 2 hours. on the way back, the wind is still blowing at the same speed, so the return trip takes only 1 hour 12 minutes. what is his speed in still air, and how fast is the wind blowing?

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