Question
PSLE
Diana had a box of yellow balls and pink balls in the ratio 16 : 9. She removed an equal number of yellow balls and pink balls from the box. The ratio of the number of yellow balls and pink balls left in the box became 3 : 1. What percentage of the balls were left in the box?
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PSLE
Diana had a box of yellow balls and pink balls in the ratio 16 : 9. She removed an equal number of yellow balls and pink balls from the box. The ratio of the number of yellow balls and pink balls left in the box became 3 : 1. What percentage of the balls were left in the box?