Question
PSLE
The mass of a container with 57 identical marbles is 710 g. When 21 of the marbles are given away, the mass of the container with the remaining marbles is 395 g. What is the mass of each marble?
2 m

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PSLE
The mass of a container with 57 identical marbles is 710 g. When 21 of the marbles are given away, the mass of the container with the remaining marbles is 395 g. What is the mass of each marble?