Question
At first, Pot N and Pot P contained 0.5 ℓ and 4.4 ℓ of water respectively. Some water from Pot P was poured into Pot N with no water spilling over. In the end, there was as much water in Pot N as in Pot P. How much water was poured from Pot P to Pot N?
3 m

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At first, Pot N and Pot P contained 0.5 ℓ and 4.4 ℓ of water respectively. Some water from Pot P was poured into Pot N with no water spilling over. In the end, there was as much water in Pot N as in Pot P. How much water was poured from Pot P to Pot N?