Question
Tank Q was filled with water with water up to a height of 23 cm while Tank R and Tank S were empty. Water was poured out into Tank R and S such that the water in all tanks were the same height in the end. How much water was poured out of Tank Q?
4 m

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Tank Q was filled with water with water up to a height of 23 cm while Tank R and Tank S were empty. Water was poured out into Tank R and S such that the water in all tanks were the same height in the end. How much water was poured out of Tank Q?