Question
PSLE
Kylie had a bag of white marbles and brown marbles in the ratio 13 : 7. She removed an equal number of white marbles and brown marbles from the bag. The ratio of the number of white marbles and brown marbles left in the bag became 9 : 4. What percentage of the marbles were left in the bag?
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PSLE
Kylie had a bag of white marbles and brown marbles in the ratio 13 : 7. She removed an equal number of white marbles and brown marbles from the bag. The ratio of the number of white marbles and brown marbles left in the bag became 9 : 4. What percentage of the marbles were left in the bag?