Question
Tank D was filled with water with water up to a height of 22 cm while Tank E and Tank F were empty. Water was poured out into Tank E and F such that the water in all tanks were the same height in the end. How much water was poured out of Tank D?
4 m

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Tank D was filled with water with water up to a height of 22 cm while Tank E and Tank F were empty. Water was poured out into Tank E and F such that the water in all tanks were the same height in the end. How much water was poured out of Tank D?