Question
At first, Bottle L and Bottle M contained 0.4 ℓ and 3.6 ℓ of water respectively. Some water from Bottle M was poured into Bottle L with no water spilling over. In the end, there was as much water in Bottle L as in Bottle M. How much water was poured from Bottle M to Bottle L?
3 m

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At first, Bottle L and Bottle M contained 0.4 ℓ and 3.6 ℓ of water respectively. Some water from Bottle M was poured into Bottle L with no water spilling over. In the end, there was as much water in Bottle L as in Bottle M. How much water was poured from Bottle M to Bottle L?