Question
PSLE
A box contained grey balls and purple balls. 60% of the balls were purple. After some brown balls were added to the box, 36% of the balls were purple. What percentage of the balls in the box were brown?
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PSLE
A box contained grey balls and purple balls. 60% of the balls were purple. After some brown balls were added to the box, 36% of the balls were purple. What percentage of the balls in the box were brown?