PSLE A bag contains marbles of three different colours.
15 of the marbles are green. The ratio of the number of purple marbles to that of orange marbles is 1 : 4. What is the ratio of the number of purple marbles to that of green marbles?
Green |
Purple |
Orange |
Total |
1x5 |
4x5 |
5x5 |
|
1x4 |
4x4 |
|
5 u |
4 u |
16 u |
25 u |
The total number of orange and purple marbles is the combined repeated identity.
Make the total number orange and purple marbles the same.
LCM of 4 and 5 = 20
Purple : Green
4 : 5
Answer(s): 4 : 5