During the gas crisis of the 1970’s, the posted highway speed limit was dropped to 88.5 km/h (55 mi/h) across the country. By the 1990s, many stretches of highway had put the posted speed limit back to 104.6 km/h (65 mi/h). In Maine, the distance from Portland to Bangor is 215 km. How much time can be saved in traveling from Portland to Bangor at this higher speed limit?
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