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Mathematics, 08.07.2019 23:40, eaglesjohnson414
Kalon and his friend marna own a chimney sweep service company. working together, they can clean a chimney in 12/7 hours. if it takes kalon 4 hours to clean a 20-foot chimney by himself, how long does it take marna to clean the same size chimney by herself?
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Kalon and his friend marna own a chimney sweep service company. working together, they can clean a c...
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