Question
PSLE
A bag contains marbles of three different colours. 16 of the marbles are purple. The ratio of the number of red marbles to that of green marbles is 1 : 3. What is the ratio of the number of purple marbles to that of green marbles?
2 m

Click button first when a symbol is required. X

PSLE
A bag contains marbles of three different colours. 16 of the marbles are purple. The ratio of the number of red marbles to that of green marbles is 1 : 3. What is the ratio of the number of purple marbles to that of green marbles?