Question
At first, Tank G and Tank H contained 0.4 ℓ and 1.7 ℓ of water respectively. Some water from Tank H was poured into Tank G with no water spilling over. In the end, there was as much water in Tank G as in Tank H. How much water was poured from Tank H to Tank G?
3 m

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At first, Tank G and Tank H contained 0.4 ℓ and 1.7 ℓ of water respectively. Some water from Tank H was poured into Tank G with no water spilling over. In the end, there was as much water in Tank G as in Tank H. How much water was poured from Tank H to Tank G?