Question
PSLE
The mass of a container with 53 identical marbles is 777 g. When 15 of the marbles are given away, the mass of the container with the remaining marbles is 507 g. What is the mass of each marble?
2 m

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PSLE
The mass of a container with 53 identical marbles is 777 g. When 15 of the marbles are given away, the mass of the container with the remaining marbles is 507 g. What is the mass of each marble?