Question
PSLE
Xuan had a box of grey balls and pink balls in the ratio 13 : 9. She removed an equal number of grey balls and pink balls from the box. The ratio of the number of grey balls and pink balls left in the box became 8 : 3. What percentage of the balls were left in the box?
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PSLE
Xuan had a box of grey balls and pink balls in the ratio 13 : 9. She removed an equal number of grey balls and pink balls from the box. The ratio of the number of grey balls and pink balls left in the box became 8 : 3. What percentage of the balls were left in the box?