Question
Jean had 2060 mℓ more orange juice than Emily. After Jean gave Emily 520 mℓ of orange juice, the ratio of Jean's orange juice to Emily's orange juice became 7 : 4. How much orange juice did Jean have at first? Give your answer in millilitres.
4 m

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Jean had 2060 mℓ more orange juice than Emily. After Jean gave Emily 520 mℓ of orange juice, the ratio of Jean's orange juice to Emily's orange juice became 7 : 4. How much orange juice did Jean have at first? Give your answer in millilitres.