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

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