Question
A box is 400 g when it is filled with stickers.
If 411 of the stickers are removed,
the mass of the box with the remaining stickers is 300 g.
What is the mass of the empty box?
2 m

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A box is 400 g when it is filled with stickers.
If 411 of the stickers are removed,
the mass of the box with the remaining stickers is 300 g.
What is the mass of the empty box?