Question
When 56 of a cup is filled with tea, it weighs 990 g. When the cup is half-filled with tea, it weighs 810 g. Find the mass of the empty cup.
4 m

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When 56 of a cup is filled with tea, it weighs 990 g. When the cup is half-filled with tea, it weighs 810 g. Find the mass of the empty cup.