Question
PSLE
The mass of a box with 64 identical beads is 770 g. When 20 of the beads are sold, the mass of the box with the remaining beads is 450 g. What is the mass of each bead?
2 m

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PSLE
The mass of a box with 64 identical beads is 770 g. When 20 of the beads are sold, the mass of the box with the remaining beads is 450 g. What is the mass of each bead?