Question
A box containing 40 rulers had a mass of 18.47 kg. A box containing 25 staplers has a mass of 22.97 kg. The mass of each stapler was twice that of each ruler. Find the mass of the empty box in grams.
4 m

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A box containing 40 rulers had a mass of 18.47 kg. A box containing 25 staplers has a mass of 22.97 kg. The mass of each stapler was twice that of each ruler. Find the mass of the empty box in grams.