Question
PSLE
A bag contains erasers of three different colours. 12 of the erasers are red. The ratio of the number of purple erasers to that of yellow erasers is 1 : 7. What is the ratio of the number of purple erasers to that of red erasers?
2 m

Click button first when a symbol is required. X

PSLE
A bag contains erasers of three different colours. 12 of the erasers are red. The ratio of the number of purple erasers to that of yellow erasers is 1 : 7. What is the ratio of the number of purple erasers to that of red erasers?