Question
PSLE
The mass of a container with 59 identical marbles is 823 g. When 30 of the marbles are sold, the mass of the container with the remaining marbles is 373 g. What is the mass of each marble?
2 m

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PSLE
The mass of a container with 59 identical marbles is 823 g. When 30 of the marbles are sold, the mass of the container with the remaining marbles is 373 g. What is the mass of each marble?