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Mathematics, 12.10.2019 13:20 yoboi33

Joaquin can clean the house in 7 hours by himself. when joaquin and josiah work together it takes 3 hours. about how long would it take josiah to clean the house by himself

a) 6.3 hours
b)5.8 hours
c) 4.0 hours
d)5.3 hours

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