Question
At first, Bottle Q and Bottle R contained 0.2 ℓ and 4.6 ℓ of water respectively. Some water from Bottle R was poured into Bottle Q with no water spilling over. In the end, there was as much water in Bottle Q as in Bottle R. How much water was poured from Bottle R to Bottle Q?
3 m

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At first, Bottle Q and Bottle R contained 0.2 ℓ and 4.6 ℓ of water respectively. Some water from Bottle R was poured into Bottle Q with no water spilling over. In the end, there was as much water in Bottle Q as in Bottle R. How much water was poured from Bottle R to Bottle Q?