Question
When 56 of a jug is filled with coffee, it weighs 790 g. When the jug is half-filled with coffee, it weighs 640 g. Find the mass of the empty jug.
4 m

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When 56 of a jug is filled with coffee, it weighs 790 g. When the jug is half-filled with coffee, it weighs 640 g. Find the mass of the empty jug.