Question
A box containing 45 staplers had a mass of 2.51 kg. A box containing 15 folders has a mass of 3.26 kg. The mass of each folder was four times that of each stapler. Find the mass of the empty box in grams.
4 m

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A box containing 45 staplers had a mass of 2.51 kg. A box containing 15 folders has a mass of 3.26 kg. The mass of each folder was four times that of each stapler. Find the mass of the empty box in grams.