Question
A box containing 45 punchers had a mass of 9.05 kg. A box containing 15 highlighters has a mass of 11.75 kg. The mass of each highlighter was four times that of each puncher. Find the mass of the empty box in grams.
4 m

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A box containing 45 punchers had a mass of 9.05 kg. A box containing 15 highlighters has a mass of 11.75 kg. The mass of each highlighter was four times that of each puncher. Find the mass of the empty box in grams.