Question
A box containing 75 notebooks had a mass of 18.95 kg. A box containing 25 punchers has a mass of 25.2 kg. The mass of each puncher was four times that of each notebook. Find the mass of the empty box in grams.
4 m

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A box containing 75 notebooks had a mass of 18.95 kg. A box containing 25 punchers has a mass of 25.2 kg. The mass of each puncher was four times that of each notebook. Find the mass of the empty box in grams.