Question
At first, Pot S and Pot T contained 0.9 ℓ and 1.7 ℓ of water respectively. Some water from Pot T was poured into Pot S with no water spilling over. In the end, there was as much water in Pot S as in Pot T. How much water was poured from Pot T to Pot S?
3 m

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At first, Pot S and Pot T contained 0.9 ℓ and 1.7 ℓ of water respectively. Some water from Pot T was poured into Pot S with no water spilling over. In the end, there was as much water in Pot S as in Pot T. How much water was poured from Pot T to Pot S?