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Mathematics, 03.08.2019 17:40 nmoareah

Lea and marie are washing all the windows in their house. it would take lea 80 minutes to wash the windows by herself, and it would take marie 60 minutes to wash them by herself. lea creates a table so she can find out how long it will take to wash the windows if they work together. what is the missing value in the table that represents the rate for marie? 60 t 60t

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