Question
A jug contained some coffee. After Diana had poured 312 mℓ of the coffee into a cup, the jug still contained 217 mℓ more coffee than the cup. How many millilitres of coffee contain at first?
4 m

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A jug contained some coffee. After Diana had poured 312 mℓ of the coffee into a cup, the jug still contained 217 mℓ more coffee than the cup. How many millilitres of coffee contain at first?