Question
A box containing 40 staplers had a mass of 5.54 kg. A box containing 20 files has a mass of 7.94 kg. The mass of each file was thrice 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 5.54 kg. A box containing 20 files has a mass of 7.94 kg. The mass of each file was thrice that of each stapler. Find the mass of the empty box in grams.