Question
At first, Barrel X and Barrel Y contained 0.4 ℓ and 2.3 ℓ of water respectively. Some water from Barrel Y was poured into Barrel X with no water spilling over. In the end, there was as much water in Barrel X as in Barrel Y. How much water was poured from Barrel Y to Barrel X?
3 m

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At first, Barrel X and Barrel Y contained 0.4 ℓ and 2.3 ℓ of water respectively. Some water from Barrel Y was poured into Barrel X with no water spilling over. In the end, there was as much water in Barrel X as in Barrel Y. How much water was poured from Barrel Y to Barrel X?