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填空题
The ratio of men to women in a room is 4: 5. If the room contains three more women than men, how many women are in the room?____
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解析：
根据题干可假设，屋子里的男人有4x，女人有5x，又因为男人比女人多3，所以5x=4x+3，所以x = 3。所以屋子里有女人5(3)= 15人。
根据题干可假设，屋子里的男人有4x，女人有5x，又因为男人比女人多3，所以5x=4x+3，所以x = 3。所以屋子里有女人5(3)= 15人。
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