Question
PSLE
The mass of a box with 57 identical marbles is 899 g. When 27 of the marbles are taken out, the mass of the box with the remaining marbles is 494 g. What is the mass of each marble?
2 m

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PSLE
The mass of a box with 57 identical marbles is 899 g. When 27 of the marbles are taken out, the mass of the box with the remaining marbles is 494 g. What is the mass of each marble?