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An airplane flying from New York to Dallas travels 3,100 miles in 7.2 hours. What was the average speed of the plane for the flight? mi/hr

Respuesta :

multiply both values by 5 (so that 7.2 gets to nearest whole number).
15,500 miles in 36 hours.
divide both values by 36 (so that 36 hours becomes 1 hour).
= 430.56 mi/hr.

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