Question
PSLE
At first, a box contained 93 black beads and some blue beads. After some black beads were removed, 47 of the beads were blue. After 84 brown beads were added to the box and now, 413 of the beads were blue. What was the number of black beads removed?
2 m

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PSLE
At first, a box contained 93 black beads and some blue beads. After some black beads were removed, 47 of the beads were blue. After 84 brown beads were added to the box and now, 413 of the beads were blue. What was the number of black beads removed?