Question
PSLE
The mass of a box with 66 identical marbles is 818 g. When 21 of the marbles are thrown away, the mass of the box with the remaining marbles is 482 g. What is the mass of each marble?
2 m

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PSLE
The mass of a box with 66 identical marbles is 818 g. When 21 of the marbles are thrown away, the mass of the box with the remaining marbles is 482 g. What is the mass of each marble?