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Molly drove home from college traveling an average speed of 66.7 mph and drove back to...

Molly drove home from college traveling an average speed of 66.7 mph and drove back to the college the following week at an average speed of 66.1 mph. If the total round trip took 9 hours, how much time did it take Molly to drive from home back to college? Express the time in hours and minutes. Round to the nearest minute.

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