Question
PSLE
The mass of a container with 56 identical balls is 783 g. When 18 of the balls are taken out, the mass of the container with the remaining balls is 477 g. What is the mass of each ball?
2 m

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PSLE
The mass of a container with 56 identical balls is 783 g. When 18 of the balls are taken out, the mass of the container with the remaining balls is 477 g. What is the mass of each ball?