Question
PSLE
At first, a box contained 60 black marbles and some purple beads. After some black marbles were removed, 58 of the marbles were purple. After 84 red marbles were added to the box and now, 514 of the beads were purple. What was the number of black marbles removed?
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PSLE
At first, a box contained 60 black marbles and some purple beads. After some black marbles were removed, 58 of the marbles were purple. After 84 red marbles were added to the box and now, 514 of the beads were purple. What was the number of black marbles removed?