Question
PSLE
A box contained yellow marbles and silver marbles. 60% of the marbles were silver. After some grey marbles were added to the box, 51% of the marbles were silver. What percentage of the marbles in the box were grey?
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PSLE
A box contained yellow marbles and silver marbles. 60% of the marbles were silver. After some grey marbles were added to the box, 51% of the marbles were silver. What percentage of the marbles in the box were grey?