Question
A box filled with 8 identical balls weighs 1840 g. The same box when filled with 4 identical marbles weighs 580 g. The mass of each ball is four times the mass of each marble. What is the mass of the box?
4 m

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A box filled with 8 identical balls weighs 1840 g. The same box when filled with 4 identical marbles weighs 580 g. The mass of each ball is four times the mass of each marble. What is the mass of the box?