Question
Jean had 1530 mℓ more milk than Joelle. After Jean gave Joelle 420 mℓ of milk, the ratio of Jean's milk to Joelle's milk became 5 : 2. How much milk did Jean have at first? Give your answer in millilitres.
4 m

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Jean had 1530 mℓ more milk than Joelle. After Jean gave Joelle 420 mℓ of milk, the ratio of Jean's milk to Joelle's milk became 5 : 2. How much milk did Jean have at first? Give your answer in millilitres.