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The overall volume of a water tank is g. If the inlet valve is open for a minute, x volume of water will be added to the tank; If the discharge valve is open for a minute, y volume of water will be removed from the tank (y>x). If the tank is filled with water at first, then in how many minutes will the water volume in the tank drop to a half if the inlet valve and discharge valve are both open?
Give your answer with x, y and g.
Give your answer with x, y and g.
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以上解析由 考满分老师提供。
