Question
A box is 600 g when it is filled with stickers.
If 811 of the stickers are removed,
the mass of the box with the remaining stickers is 400 g.
What is the mass of the empty box?
2 m

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A box is 600 g when it is filled with stickers.
If 811 of the stickers are removed,
the mass of the box with the remaining stickers is 400 g.
What is the mass of the empty box?