Mathematics, 21.01.2021 23:30 kimvigil4580

Mark can clean a house in 7 hours. When he cleans the same house with Wendy, it takes them 3 hours to clean the house. How long would it take Wendy to clean the house by herself? Write your answer as a decimal.

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Mark can clean a house in 7 hours. When he cleans the same house with Wendy, it takes them 3 hours t...