Question
PSLE
Risa had a bag of blue beads and grey beads in the ratio 16 : 9. She removed an equal number of blue beads and grey beads from the bag. The ratio of the number of blue beads and grey beads left in the bag became 9 : 2. What percentage of the beads were left in the bag?
2 m

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PSLE
Risa had a bag of blue beads and grey beads in the ratio 16 : 9. She removed an equal number of blue beads and grey beads from the bag. The ratio of the number of blue beads and grey beads left in the bag became 9 : 2. What percentage of the beads were left in the bag?