Question
PSLE
Barbara had a basket of grey balls and silver balls in the ratio 13 : 7. She removed an equal number of grey balls and silver balls from the basket. The ratio of the number of grey balls and silver balls left in the basket became 8 : 3. What percentage of the balls were left in the basket?
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PSLE
Barbara had a basket of grey balls and silver balls in the ratio 13 : 7. She removed an equal number of grey balls and silver balls from the basket. The ratio of the number of grey balls and silver balls left in the basket became 8 : 3. What percentage of the balls were left in the basket?