Question
A box containing 40 staplers had a mass of 2.72 kg. A box containing 25 post-it-pads has a mass of 3.22 kg. The mass of each post-it-pad was twice that of each stapler. Find the mass of the empty box in grams.
4 m

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A box containing 40 staplers had a mass of 2.72 kg. A box containing 25 post-it-pads has a mass of 3.22 kg. The mass of each post-it-pad was twice that of each stapler. Find the mass of the empty box in grams.