Question
PSLE
A box contained purple beads and black beads. 40% of the beads were black. After some grey beads were added to the box, 12% of the beads were black. What percentage of the beads in the box were grey?
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PSLE
A box contained purple beads and black beads. 40% of the beads were black. After some grey beads were added to the box, 12% of the beads were black. What percentage of the beads in the box were grey?