Question
When 710 of a cup is filled with soy milk, it weighs 850 g. When the cup is half-filled with soy milk, it weighs 640 g. Find the mass of the empty cup.
4 m

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When 710 of a cup is filled with soy milk, it weighs 850 g. When the cup is half-filled with soy milk, it weighs 640 g. Find the mass of the empty cup.