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Mathematics, 19.11.2019 06:31 amandavertre
An airplane took 2 hours to fly 600 km against a head wind. the retrun trip with the wind took 1 and two thirds hours. find the speed of the plane in stll air.
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An airplane took 2 hours to fly 600 km against a head wind. the retrun trip with the wind took 1 and...
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