Question
PSLE
The mass of a container with 70 identical marbles is 872 g. When 21 of the marbles are thrown away, the mass of the container with the remaining marbles is 536 g. What is the mass of each marble?
2 m

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PSLE
The mass of a container with 70 identical marbles is 872 g. When 21 of the marbles are thrown away, the mass of the container with the remaining marbles is 536 g. What is the mass of each marble?