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Jessie recently drove to visit her parents who live 540 miles away. On her way there her average speed was 21 miles per hour

Jessie recently drove to visit her parents who live 540 miles away. On her way there her average speed was 21 miles per hour faster than on her way home (she ran into some bad weather). If Jessie spent a total of 15 hours driving, find the two rates (in mph). Round your answer to two decimal places, if needed.

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