Question
PSLE
A bag contains beads of three different colours. 18 of the beads are blue. The ratio of the number of yellow beads to that of purple beads is 1 : 4. What is the ratio of the number of yellow beads to that of blue beads?
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PSLE
A bag contains beads of three different colours. 18 of the beads are blue. The ratio of the number of yellow beads to that of purple beads is 1 : 4. What is the ratio of the number of yellow beads to that of blue beads?