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OpenStudy (anonymous):
At 10:00 a.m. two planes leave an airport. If the northbound plane flies at 280 mph and the southbound at 320 mph, at what time will they be 1,000 miles apart? { a.m.}
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OpenStudy (anonymous):
they're going 40mph difference, and 1000/40 would be 25 so 25 hours, so 11:00am the next day? sound right?
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