Question
PSLE
The mass of a box with 70 identical balls is 930 g. When 19 of the balls are given away, the mass of the box with the remaining balls is 550 g. What is the mass of each ball?
2 m

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PSLE
The mass of a box with 70 identical balls is 930 g. When 19 of the balls are given away, the mass of the box with the remaining balls is 550 g. What is the mass of each ball?