Question
Tiffany had 1720 mℓ more milk than Gem. After Tiffany gave Gem 550 mℓ of milk, the ratio of Tiffany's milk to Gem's milk became 5 : 3. How much milk did Tiffany have at first? Give your answer in millilitres.
4 m

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Tiffany had 1720 mℓ more milk than Gem. After Tiffany gave Gem 550 mℓ of milk, the ratio of Tiffany's milk to Gem's milk became 5 : 3. How much milk did Tiffany have at first? Give your answer in millilitres.