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Mathematics 24 Online
OpenStudy (anonymous):

A plane took 5 hours to get from Omaha to San Francisco with a tailwind of 28 mph. It took 6 hours to make the return trip with a headwind of the same speed, 28 mph. How fast was the plane traveling in still air? 256 mph 272 mph 304 mph 308 mph

OpenStudy (anonymous):

308 mph :)

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