Question
PSLE
Sarah had a basket of purple marbles and silver marbles in the ratio 17 : 8. She removed an equal number of purple marbles and silver marbles from the basket. The ratio of the number of purple marbles and silver marbles left in the basket became 5 : 2. What percentage of the marbles were left in the basket?
2 m

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PSLE
Sarah had a basket of purple marbles and silver marbles in the ratio 17 : 8. She removed an equal number of purple marbles and silver marbles from the basket. The ratio of the number of purple marbles and silver marbles left in the basket became 5 : 2. What percentage of the marbles were left in the basket?