Question
At first, Jar B and Jar C contained 0.7 ℓ and 3.9 ℓ of water respectively. Some water from Jar C was poured into Jar B with no water spilling over. In the end, there was as much water in Jar B as in Jar C. How much water was poured from Jar C to Jar B?
3 m

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At first, Jar B and Jar C contained 0.7 ℓ and 3.9 ℓ of water respectively. Some water from Jar C was poured into Jar B with no water spilling over. In the end, there was as much water in Jar B as in Jar C. How much water was poured from Jar C to Jar B?