Mathematics, 21.10.2019 13:30 mcclendoncassandra

An experienced window washer can wash all the windows in mike’s house in 2 hours, while a new trainee can wash all the windows in 7 hours. how long would it take them working together? round your answer to the nearest minute if needed.

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An experienced window washer can wash all the windows in mike’s house in 2 hours, while a new traine...