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Mathematics 7 Online
OpenStudy (flvskidd):

Frank drove to the mountains last weekend. There was heavy traffic on the way there, and the trip took 8 hours. When Frank drove home, there was no traffic and the trip only took 5 hours. If his average rate was 21 miles per hour faster on the trip home, how far away does Frank live from the mountains? Do not do any rounding.

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