Question
Tank N is half-filled with water while Tank P is empty. Harry poured water from Tank N into Tank P without spilling until the water level in both tanks were the same. What is the volume of the water in Tank P now?
5 m

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Tank N is half-filled with water while Tank P is empty. Harry poured water from Tank N into Tank P without spilling until the water level in both tanks were the same. What is the volume of the water in Tank P now?