Question
PSLE
A box contained black marbles and green marbles. 70% of the marbles were green. After some pink marbles were added to the box, 42% of the marbles were green. What percentage of the marbles in the box were pink?
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PSLE
A box contained black marbles and green marbles. 70% of the marbles were green. After some pink marbles were added to the box, 42% of the marbles were green. What percentage of the marbles in the box were pink?