Question
PSLE
Elyse had a box of white balls and yellow balls in the ratio 16 : 9. She removed an equal number of white balls and yellow balls from the box. The ratio of the number of white balls and yellow balls left in the box became 8 : 1. What percentage of the balls were left in the box?
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PSLE
Elyse had a box of white balls and yellow balls in the ratio 16 : 9. She removed an equal number of white balls and yellow balls from the box. The ratio of the number of white balls and yellow balls left in the box became 8 : 1. What percentage of the balls were left in the box?