Question
Lucy had 2380 mℓ more orange juice than Xandra. After Lucy gave Xandra 490 mℓ of orange juice, the ratio of Lucy's orange juice to Xandra's orange juice became 7 : 3. How much orange juice did Lucy have at first? Give your answer in millilitres.
4 m

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Lucy had 2380 mℓ more orange juice than Xandra. After Lucy gave Xandra 490 mℓ of orange juice, the ratio of Lucy's orange juice to Xandra's orange juice became 7 : 3. How much orange juice did Lucy have at first? Give your answer in millilitres.