Question
At first, Bottle H and Bottle J contained 0.8 ℓ and 4.7 ℓ of water respectively. Some water from Bottle J was poured into Bottle H with no water spilling over. In the end, there was as much water in Bottle H as in Bottle J. How much water was poured from Bottle J to Bottle H?
3 m

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At first, Bottle H and Bottle J contained 0.8 ℓ and 4.7 ℓ of water respectively. Some water from Bottle J was poured into Bottle H with no water spilling over. In the end, there was as much water in Bottle H as in Bottle J. How much water was poured from Bottle J to Bottle H?