Question
A box containing 80 highlighters had a mass of 8.68 kg. A box containing 25 rulers has a mass of 10.68 kg. The mass of each ruler was four times that of each highlighter. Find the mass of the empty box in grams.
4 m

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A box containing 80 highlighters had a mass of 8.68 kg. A box containing 25 rulers has a mass of 10.68 kg. The mass of each ruler was four times that of each highlighter. Find the mass of the empty box in grams.