Question
A box containing 40 highlighters had a mass of 6.63 kg. A box containing 20 punchers has a mass of 9.63 kg. The mass of each puncher was thrice that of each highlighter. Find the mass of the empty box in grams.
4 m

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A box containing 40 highlighters had a mass of 6.63 kg. A box containing 20 punchers has a mass of 9.63 kg. The mass of each puncher was thrice that of each highlighter. Find the mass of the empty box in grams.