Question
PSLE
A box contained gold balls and pink balls. 70% of the balls were pink. After some grey balls were added to the box, 56% of the balls were pink. What percentage of the balls in the box were grey?
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PSLE
A box contained gold balls and pink balls. 70% of the balls were pink. After some grey balls were added to the box, 56% of the balls were pink. What percentage of the balls in the box were grey?