Question
PSLE
The mass of a box with 49 identical balls is 909 g. When 26 of the balls are given away, the mass of the box with the remaining balls is 519 g. What is the mass of each ball?
2 m

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PSLE
The mass of a box with 49 identical balls is 909 g. When 26 of the balls are given away, the mass of the box with the remaining balls is 519 g. What is the mass of each ball?