Question
PSLE
The mass of a container with 45 identical balls is 947 g. When 30 of the balls are used, the mass of the container with the remaining balls is 347 g. What is the mass of each ball?
2 m

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PSLE
The mass of a container with 45 identical balls is 947 g. When 30 of the balls are used, the mass of the container with the remaining balls is 347 g. What is the mass of each ball?