Question
At first, Pot W and Pot X contained 0.4 ℓ and 3.5 ℓ of water respectively. Some water from Pot X was poured into Pot W with no water spilling over. In the end, there was as much water in Pot W as in Pot X. How much water was poured from Pot X to Pot W?
3 m

Click button first when a symbol is required. X

At first, Pot W and Pot X contained 0.4 ℓ and 3.5 ℓ of water respectively. Some water from Pot X was poured into Pot W with no water spilling over. In the end, there was as much water in Pot W as in Pot X. How much water was poured from Pot X to Pot W?