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Mathematics, 13.11.2020 16:30 cielo2761

A plane climbs into the jet stream which is flowing at a rate of 80 miles per hour. Traveling with the jet stream for 5 hours, the plane covers 1,150 miles. The plane then reduces its altitude and flies out of the jet stream. Continuing for another 5 hours, the plane covers only 750 miles. How fast is the plane flying out of the jet stream?

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