Question
PSLE
A bag contains erasers of three different colours. 15 of the erasers are red. The ratio of the number of yellow erasers to that of purple erasers is 4 : 1. What is the ratio of the number of red erasers to that of purple erasers?
2 m

Click button first when a symbol is required. X

PSLE
A bag contains erasers of three different colours. 15 of the erasers are red. The ratio of the number of yellow erasers to that of purple erasers is 4 : 1. What is the ratio of the number of red erasers to that of purple erasers?