Mathematics, 17.11.2019 02:31, vivian2020

Sue can clean the room in 45 minutes. ann can clean the room in 1 hour. sue cleaned for 15 minutes before ann came to her. how long did they work together to finish cleaning? write answer in fraction then write in decimal.

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Sue can clean the room in 45 minutes. ann can clean the room in 1 hour. sue cleaned for 15 minutes b...