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Mathematics, 08.03.2021 07:40 sarahfsakrani

Mary spent the first 12 miles of her road trip in traffic. When the traffic cleared, she was able to drive twice as fast for the remaining 30 miles. If the total trip took one hour, what was her
average speed in traffic?
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Mary spent the first 12 miles of her road trip in traffic. When the traffic cleared, she was able to...

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