Question
PSLE
A bag contains marbles of three different colours. 17 of the marbles are blue. The ratio of the number of purple marbles to that of yellow marbles is 1 : 4. What is the ratio of the number of purple marbles to that of blue marbles?
2 m

Click button first when a symbol is required. X

PSLE
A bag contains marbles of three different colours. 17 of the marbles are blue. The ratio of the number of purple marbles to that of yellow marbles is 1 : 4. What is the ratio of the number of purple marbles to that of blue marbles?