Question
PSLE
Tiffany had a basket of purple marbles and black marbles in the ratio 17 : 8. She removed an equal number of purple marbles and black marbles from the basket. The ratio of the number of purple marbles and black marbles left in the basket became 7 : 1. What percentage of the marbles were left in the basket?
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PSLE
Tiffany had a basket of purple marbles and black marbles in the ratio 17 : 8. She removed an equal number of purple marbles and black marbles from the basket. The ratio of the number of purple marbles and black marbles left in the basket became 7 : 1. What percentage of the marbles were left in the basket?