Question
Dana had 2080 mℓ more milk than Kimberly. After Dana gave Kimberly 440 mℓ of milk, the ratio of Dana's milk to Kimberly's milk became 7 : 3. How much milk did Dana have at first? Give your answer in millilitres.
4 m

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Dana had 2080 mℓ more milk than Kimberly. After Dana gave Kimberly 440 mℓ of milk, the ratio of Dana's milk to Kimberly's milk became 7 : 3. How much milk did Dana have at first? Give your answer in millilitres.