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.
1 answer:
( 4 )hours for Wendy by herself because if it takes mark 7 hours by him self and 3 with Wendy, it will take Wendy 4 hours because 7 from 3 is 4
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