Question
A drink seller mixes 5.5 ℓ of water with 1.5 ℓ of lemon syrup. How much lemon syrup must he use if he wishes to prepare 42 ℓ of the mixture?
3 m

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A drink seller mixes 5.5 ℓ of water with 1.5 ℓ of lemon syrup. How much lemon syrup must he use if he wishes to prepare 42 ℓ of the mixture?