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Algebra 19 Online
OpenStudy (anonymous):

Andy and Kelly are painting their living room in their new house. Andy gets off work an hour before Kelly and both start painting once they arrive at home. Over the weekend, Andy and Kelly (who work at equal paces) were able to paint their office in 2.5 hours while working together. Their living room is 2 times bigger than their office. How long will each have to work to have the living room completely painted?

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