Question
PSLE
The mass of a box with 57 identical balls is 790 g. When 26 of the balls are set aside, the mass of the box with the remaining balls is 452 g. What is the mass of each ball?
2 m

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PSLE
The mass of a box with 57 identical balls is 790 g. When 26 of the balls are set aside, the mass of the box with the remaining balls is 452 g. What is the mass of each ball?