Question
PSLE
A box contained grey balls and pink balls. 30% of the balls were pink. After some white balls were added to the box, 9% of the balls were pink. What percentage of the balls in the box were white?
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PSLE
A box contained grey balls and pink balls. 30% of the balls were pink. After some white balls were added to the box, 9% of the balls were pink. What percentage of the balls in the box were white?